Bank of America - Global Energy Conference Donald C. Templin, Executive Vice President Supply, Transportation, and Marketing November 11, 2015 Forward‐Looking Statements This presentation contains forward-looking statements within the meaning of federal securities laws regarding Marathon Petroleum Corporation (“MPC”) and MPLX LP (“MPLX”). These forward-looking statements relate to, among other things, expectations, estimates and projections concerning the business and operations of MPC and MPLX. You can identify forward-looking statements by words such as “anticipate,” “believe,” “estimate,” "objective," “expect,” “forecast,” “guidance,” “imply”, "plan," “project,” "potential," “could,” “may,” “should,” “would,” “will” or other similar expressions that convey the uncertainty of future events or outcomes. Such forward-looking statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond the companies’ control and are difficult to predict. In addition to other factors described herein that could cause MPLX’s results to differ materially from those implied in these forward-looking statements, negative capital market conditions, including a persistence or increase of the current yield on common units, which is higher than historical yields, could adversely affect MPLX’s ability to meet its distribution growth guidance, particularly with respect to the later years of such guidance. Factors that could cause MPC’s actual results to differ materially from those implied in the forward-looking statements include: risks described below relating to the MPLX/MarkWest Energy, L.P. (“MWE”) proposed merger; changes to the expected construction costs and timing of pipeline projects; volatility in and/or degradation of market and industry conditions; the availability and pricing of crude oil and other feedstocks; slower growth in domestic and Canadian crude supply; an easing or lifting of the U.S. crude oil export ban; completion of pipeline capacity to areas outside the U.S. Midwest; consumer demand for refined products; transportation logistics; the reliability of processing units and other equipment; MPC’s ability to successfully implement growth opportunities; modifications to MPLX earnings and distribution growth objectives; federal and state environmental, economic, health and safety, energy and other policies and regulations; MPC’s ability to successfully integrate the acquired Hess retail operations and achieve the strategic and other expected objectives relating to the acquisition; changes to MPC’s capital budget; other risk factors inherent to MPC’s industry; and the factors set forth under the heading "Risk Factors" in MPC's Annual Report on Form 10-K for the year ended Dec. 31, 2014, filed with Securities and Exchange Commission (SEC). Factors that could cause MPLX's actual results to differ materially from those implied in the forward-looking statements include: the ability to complete the proposed merger of MPLX and MWE on anticipated terms and timetable; the ability to obtain approval of the transaction by the unitholders of MWE and satisfy other conditions to the closing of the transaction contemplated by the merger agreement; risk that the synergies from the MPLX/MWE transaction may not be fully realized or may take longer to realize than expected; disruption from the MPLX/MWE transaction making it more difficult to maintain relationships with customers, employees or suppliers; risks relating to any unforeseen liabilities of MWE or MPLX, as applicable; the adequacy of MPLX’s and MWE’s respective capital resources and liquidity, including, but not limited to, availability of sufficient cash flow to pay distributions, and the ability to successfully execute their business plans and implement their growth strategies; the timing and extent of changes in commodity prices and demand for crude oil, refined products, feedstocks or other hydrocarbon-based products; volatility in and/or degradation of market and industry conditions; completion of pipeline capacity by competitors; disruptions due to equipment interruption or failure, including electrical shortages and power grid failures; the suspension, reduction or termination of MPC's obligations under MPLX’s commercial agreements; each company’s ability to successfully implement its growth plan, whether through organic growth or acquisitions; modifications to earnings and distribution growth objectives; federal and state environmental, economic, health and safety, energy and other policies and regulations; changes to MPLX’s capital budget; other risk factors inherent to MPLX’s or MWE’s industry; and the factors set forth under the heading "Risk Factors" in MPLX's Annual Report on Form 10-K for the year ended Dec. 31, 2014, filed with the SEC; and the factors set forth under the heading "Risk Factors" in MWE's Annual Report on Form 10-K for the year ended Dec. 31, 2014, and Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed with the SEC. These risks, as well as other risks associated with MPLX, MWE and the proposed transaction are also more fully discussed in the preliminary joint proxy statement and prospectus included in the registration statement on Form S-4 filed with the SEC by MPLX on August 18, 2015, as amended. In addition, the forward-looking statements included herein could be affected by general domestic and international economic and political conditions. Unpredictable or unknown factors not discussed here, in MPC's Form 10-K, in MPLX’s Form 10-K, or in MWE’s Form 10-K could also have material adverse effects on forward-looking statements. Copies of MPC's Form 10-K are available on the SEC website, MPC's website at http://ir.marathonpetroleum.com or by contacting MPC's Investor Relations office. Copies of MPLX's Form 10-K are available on the SEC website, MPLX's website at http://ir.mplx.com or by contacting MPLX's Investor Relations office. Copies of MWE’s Form 10-K are available on the SEC website, MWE’s website at http://investor.markwest.com or by contacting MWE’s Investor Relations office. Non-GAAP Financial Measures EBITDA, cash provided from operations before changes in working capital and adjusted free cash flow are non-GAAP financial measures provided in this presentation. EBITDA, cash provided from operations before changes in working capital and adjusted free cash flow reconciliations to the nearest GAAP financial measures are included in the Appendix to this presentation. EBITDA, cash provided from operations before changes in working capital and adjusted free cash flow are not defined by GAAP and should not be considered in isolation or as an alternative to net income attributable to MPC, net cash provided by (used in) operating, investing and financing activities or other financial measures prepared in accordance with GAAP. 2 Additional Information Related to MPLX Additional Information and Where to Find it This communication may be deemed to be solicitation material in respect of the proposed acquisition of MWE by MPLX. In connection with the proposed acquisition, MWE and MPLX have filed relevant materials with the SEC, including MPLX’s registration statement on Form S-4 that includes a definitive joint proxy statement and a prospectus and was declared effective by the SEC on October 29, 2015. Investors and security holders are urged to read all relevant documents filed with the SEC, including the definitive joint proxy statement and prospectus, because they contain important information about the proposed transaction. Investors and security holders are able to obtain the documents free of charge at the SEC’s website, http://www.sec.gov, or for free from MPLX LP at its website, http://ir.mplx.com, or in writing at 200 E. Hardin Street, Findlay, Ohio 45840, Attention: Corporate Secretary, or for free from MWE by contacting Investor Relations by phone at 1-(866) 858-0482 or by email at investorrelations@markwest.com. Participants in Solicitation This communication is not a solicitation of a proxy from any investor or securityholder. However MPLX and its directors and executive officers and certain employees may be deemed to be participants in the solicitation of proxies from the holders of MWE common units with respect to the proposed transaction. Information about MPLX’s directors and executive officers is available in MPLX’s Annual Report on Form 10-K filed with the SEC on February 27, 2015 and MPLX’s current report on Form 8-K, as filed with the SEC on March 9, 2015. Information about MWE’s directors and executive officers is set forth in the proxy statement for MWE’s 2015 Annual Meeting of Common Unitholders, which was filed with the SEC on April 23, 2015 and MWE’s current reports on Form 8-K, as filed with the SEC on May 5, 2015, May 19, 2015 and June 8, 2015, and in the definitive joint proxy statement filed by MPLX, which was declared effective by the SEC on October 29, 2015. To the extent holdings of MWE securities have changed since the amounts contained in the definitive joint proxy statement filed by MPLX, which was declared effective by the SEC on October 29, 2015, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Investors may obtain additional information regarding the interest of such participants by reading the definitive joint proxy statement and prospectus regarding the acquisition. These documents may be obtained free of charge from the SEC’s website http://www.sec.gov, or from MWE and MPLX using the contact information above. Non-Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended. 3 MPC’s Advantaged System First Mover and Peer Group Leader Top-tier safety and environmental performance Integrated downstream system Growing Midstream/MPLX – MPLX/MWE merger Enhancing margins in our refining operations Speedway – Hess integration Capital return to shareholders – Share repurchase program – Strong and growing dividend 4 Advantaged Integrated Model Largest overall downstream system east of the Mississippi Significant optionality and flexibility Ability to extract value across entire supply chain Value enhancement opportunities in volatile markets As of Sept. 30, 2015 See appendix for legend 5 MPLX/MarkWest Powerful Strategic Combination Creates a large-cap, diversified MLP with a very attractive distribution growth profile for an extended period of time – Combined partnership expects compound annual distribution growth rate of ≥25 percent through 2017 and approximately 20 percent annual distribution growth in years 2018 and 2019 – Expects LP distribution growth of 25 percent in 2016 MPC, as the GP sponsor, has interests aligned with the combined MLP and is committed to provide support for the distribution growth objectives Combines MWE’s robust organic growth opportunities with MPC/MPLX’s financial strength Committed to investment grade credit profile for combined partnership MWE’s management brings a proven track record of executing organic growth projects and developing strong customer relationships 6 Significance of MPLX/MarkWest Merger Creates large-cap, diversified MLP with peer-leading distribution growth profile Growing higher value, stable cash flow midstream business Opportunity to capture value through numerous incremental growth projects Expands cash flow profile for general partner See appendix for legend of MPC assets MarkWest Northeast Complex MarkWest Marcellus Complex MarkWest Southwest Complex MarkWest Utica Complex MarkWest Offices 7 MarkWest Has the Premier Position in Marcellus/Utica Second-largest natural gas processor and the fourth-largest fractionator of NGLs in the U.S. Extensive long-term producer partnerships with Marcellus and Utica area dedications of 7.7 million acres Processes and fractionates approximately three quarters of growing production from rich-gas areas in the Northeast Operates 39 processing and fractionation facilities in the Marcellus and Utica shales and has 13 additional facilities currently under construction – 7 of the top 10 processing complexes will be owned by MWE in 2017* – 8 of the top 14 fractionation complexes will be owned by MWE in 2017* * Source: Bentek Energy - NGL Facilities Databank as of 5.20.2015 8 MPC’s Currently Identified Eligible MLP EBITDA ~$1.6 B and growing Retained by MPC ● ~ 5,400 miles of additional crude and products pipelines – Owns, leases or has an ownership interest in these pipelines – 0.5% of MPLX Pipe Line Holdings LP Pipelines ● Southern Access Extension, Sandpiper and Utica investments Marine ● 203 owned and 12 leased inland barges; 5.3 MMBBL capacity ● 18 owned and one leased inland towboats Terminals ● 62 light product; ~20 MMBBL storage; 189 loading lanes ● 18 asphalt; ~5 MMBBL storage; 65 loading lanes Railcars ● 27 owned and 2,183 leased ● 794 general service; 1,171 high pressure; 245 open-top hoppers Refineries ● ● ● ● Fuels Distribution 59 MMBBL storage (tanks and caverns) 25 rail loading racks and 24 truck loading racks 7 owned and 11 non-owned docks 2 condensate splitter investments ● 20 B gallons of fuels distribution volume – Existing MPC and Speedway volumes; ~17 B gallons refined products – Acquisition of Hess’ retail operations adds ~3 B gallons refined products 9 Investing in Significant Midstream Growth Projects Access to advantaged crudes Creating industry solutions Growing midstream portfolio Sustaining pipeline advantage Financial benefits to both MPC and MPLX See appendix for legend 10 SAX and Sandpiper Enhances Crude Optionality Differentials to LLS Expected SAX Grades differentials constantly changing Bakken $/BBL 10 0 Grade -10 -20 -30 -40 -50 -60 Bakken Synthetic Canadian Conventional Light/Medium Canadian Heavy Synthetic Canadian Medium Canadian Heavy Provides access to Canadian and Bakken grades that are currently constrained Improves flexibility to optimize crude supply to MPC Midwest refining system 11 MPC’s Strength in Refining Largest refiner east of the Mississippi Refining capacity in advantaged regions Optimized seven-plant system ~70 percent assured sales of gasoline production Continued focus on margin-enhancing projects 12 Refinery Margin-Enhancing Projects ~$835 MM capital investments, generating ~$650 MM annual EBITDA Increasing Light Sweet Crude and Condensate Capacity ‒ ‒ ‒ ‒ Condensate splitters at Canton and Catlettsburg refineries (+60 MBD) Light crude processing project at Robinson (+30 MBD) ~$390 MM investment, >30% ROI 4Q 2014-2016 completion Growing Gulf Coast Export Capabilities – Adding export capacity at Garyville and Galveston Bay (+360 MBD) – ~$120 MM investment, ~30-40% ROI – 2013-2018 completion Capitalizing on Global Growth in Diesel Demand ‒ Increasing distillate production at Garyville, Galveston Bay and Robinson (+49 MBD) ‒ ~$325 MM investment, ~30-50% ROI ‒ 2014-2016 completion 13 Galveston Bay Driving Value Integration with Texas City refinery Revamp crude and vacuum units – Optimize for future crude availability – Improve distillate recovery Add hydrotreating capacity – Move to 100% ULSD Idle the smallest and oldest FCC Expand export capabilities Expand bottom upgrade capacity 14 Speedway’s Integration to “Best in Class” Platform Nearly 1,000 locations converted Total capital: – Conversion $181 MM – Remodel $240 MM ~500 Stores completed Oct. 2015 Achieving synergies Conversion creates platform for increased merchandise revenue ~495 Stores by Dec. 2016 ~250 Stores completed March 2015 15 Extensive Retail Network Drives Integrated Value Speedway 74 64 51 303 752 241 108 108 308 488 63 327 647 848 1 61 147 121 68 Speedway 130 577 32 Brand 288 360 293 62 2 6 130 65 231 313 2 Conn. 247 618 Map of Sept. 30, 2015 12 Largest company-owned and operated c-store chain east of the Mississippi Growth through Hess acquisition Marathon Marketing 1 Del. 4 Mass. 114 N.J. 72 R.I. 20 ~5,600 branded locations One of the largest asphalt marketers in the country Quality supplier into wholesale and secondary product markets 16 Sustaining U.S. Refining Advantage Natural Gas Price Comparison 18 Actual Forecast 16 European Natural Gas (World Bank)* 14 $/MMBtu Japanese Liquefied Natural Gas (World Bank)* HH Spot Price (World Bank) 12 10 8 6 4 2 0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Source: World Bank Commodities Price Forecast, October 2015 *Average import border price 17 Continuing U.S. Refined Product Demand 300 Year-over-Year U.S. Product Demand Growth Continued strong refined product demand 250 MBD 200 Lower fuel prices with continued income and employment growth stimulated 2015 gasoline strength 150 100 Expect strong distillate demand long term 50 0 2013 Motor Gasoline 2014 Motor Gasoline ex Ethanol 2015* Distillate Kero-jet Source: EIA *YTD through September 2015 18 Increasing U.S. Gross Refined Product Exports MMBD 4.5 4.0 Gasolines 3.5 Kero-Jet 3.0 Diesels 2.5 Propane/Propylene 2.0 Gross Product Exports MPC Finished Product Exports = ~315 MBD YTD* 1.5 1.0 0.5 0.0 Source: U.S. Energy Information Administration *Through September 2015 19 Capital Return and Investment Strategy 20 Balanced Approach to Returning Capital and Investment $11.7 Billion Returned 1.9x adjusted free cash flow to investors since spin** $9.1 Billion Investing in value-enhancing projects and acquisitions Capital Invested in the Business Return of Capital to Shareholders* *$2.0 B dividends plus $7.1 B share repurchases **Adjusted free cash flow of $4.9 B (cash flow provided by operations less capital expenditures, acquisitions, investments and contingent consideration) 21 Substantial Dividend Growth Since Spinoff +28% $0.32 0.35 0.30 0.15 0.10 +20% $0.21 +40% $0.175 0.20 +25% $0.125 $0.10 $89 $71 $119 $87 300 +19% $0.25 250 $171 $116 $116 $113 $129 $126 $123 $141 $122 $138 $136 $171 $136 $85 150 100 0.05 0.00 200 $MM $/Share 0.25 350 50 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 2011 2011 2012 2012 2012 2012 2013 2013 2013 2013 2014 2014 2014 2014 2015 2015 2015 2015 Note: All values adjusted for stock split Dividend per Share 0 Total Dividends Paid per Quarter 22 Share Repurchases Since Spinoff 1,200 8,000 Since spinoff: $1,028 $882 $850 6,000 $689 800 $682 600 4,000 $500 $431 $452 400 $459 $408 $301 2,000 $209 200 $156 0 Cumulative $MM Qtrly Repurchases $MM 1,000 – $10 B in total Board authorizations – $7.05 B returned to shareholders – ~194 MM shares retired, 27 percent of June 30, 2011 balance* 0 ASR 10b5-1/Open Market Cumulative Purchases *Adjusted for stock split 23 Why MPC? First Mover Separation from upstream Creation of Drop-down MLP Capital returns to shareholders Using MLP to be industry solution provider Peer Leader Sustained performance through all cycles Consistent and reliable operator MPLX value to MPC Disciplined capital allocation 24 Appendix 25 Fully Integrated Downstream System Refining and Marketing Seven-plant refining system with ~1.7 MMBPCD capacity One biodiesel facility and interest in three ethanol facilities One of the largest wholesale suppliers in our market area Marketing Area One of the largest producers of asphalt in the U.S. MPC Refineries ~5,600 Marathon Brand retail outlets across 19 states Light Product Terminals MPC owned and Part-owned Third Party Asphalt/Heavy Oil Terminals MPC Owned Third Party Water Supplied Terminals Coastal Inland Pipelines MPC Owned and Operated MPC Interest: Operated by MPC MPC Interest: Operated by Others Pipelines Used by MPC Ethanol Facility Biodiesel Facility ~362 retail outlet contract assignments primarily in the Southeast and select Northeast states Owns/operates 62 light product terminals and 18 asphalt terminals, while utilizing third-party terminals at 118 light product and six asphalt locations 18 owned and one leased inland waterway towboats with 203 owned barges and 12 leased barges, 2,210 owned/leased railcars, 142 owned transport trucks Speedway (Retail) ~2,760 locations in 22 states Second largest U.S. owned/operated c-store chain Pipeline Transportation Owns, leases or has interest in ~8,300 miles of pipelines Tank Farms Butane Cavern Pipelines As of Sept. 30, 2015 Barge Dock One of the largest petroleum pipeline companies in U.S. Part ownership in non-operated pipelines includes Explorer, LOCAP, LOOP, Maumee and Wolverine 26 Investing in Significant Midstream Growth Projects Sandpiper ‒ MPC Investment: $1.0 B - $1.2 B ‒ MPC Equity: 27% - 30% ‒ 2017 completion est. Southern Access Extension (SAX) Youngstown Canton Canadian Midland Wellsville Steubenville Bakken M3, Leesville M3, Scio MarkWest, Cadiz Ohio Superior, WI – MPC Investment: ~$330 MM – MPC Equity: 35% – Late 2015 completion est. Flanagan, IL SAX Cornerstone ‒ ‒ ‒ ‒ Industry solution, 16” diameter pipeline MPLX Investment: ~$250 MM ~$40 MM EBITDA Late 2016 completion est. Pa. Canton Cornerstone Utica Patoka, IL MPC Refinery Terminal Facilities MPLX Products Pipeline Proposed Cornerstone Pipeline Utica Gas Processing Facilities MPC Crude Pipeline Future Build-out 27 Performing Consistently in the Top Tier Engine behind MPC’s focus on capital returns Operating Income Per Barrel of Crude Throughput** 20 MPC’s Rank 15 $/BBL Competitor Range 1 10 2 5 3 2 1 3 2 0 3 2 5 5 1 2 3 7 1 3 3 -5 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Companies Ranked* 12 June YTD Preliminary 11 11 9 10 10 9 8 8 9 9 8 8 8 8 8 8 9 *Current companies ranked: BP, CVX, HFC, MPC, PBF, PSX, TSO, VLO, XOM **Adjusted domestic operating income per barrel of crude oil throughput Source: Company Reports 28 Our Priorities for Our Investors Maintain top-tier safety and environmental performance Share Price $70 $60 $50 Oct-15 Jul-15 Apr-15 Jan-15 Oct-14 Jul-14 Apr-14 Jan-14 Oct-13 Jul-13 Apr-13 Jan-13 Oct-12 Enhance the margins in our refining operations $10 Jul-12 $20 Spinoff Apr-12 Grow higher valued and stable cash-flow businesses $30 Jan-12 $40 Oct-11 Balance capital returns with value-enhancing investments Jul-11 Sustain our focus on shareholder returns Source: Thomson Reuters 29 Sustaining Capital Returns Since Spin 10,000 Cumulative Return of Capital Since July 1, 2011 $9.1 B $MM 8,000 6,000 4,000 2,000 0 Dividends Share repurchases 30 Focused Return of Capital to Shareholders 5,000 4,500 4,000 LTM Ended 9/30/15 Dividends and share repurchases ~1.5x of Adj. Free Cash Flow*** Dividends and share repurchases* $MM 3,500 2,036 3,000 2,500 2,000 3,641 Investments** Net cash provided by operations 1,500 1,000 $1,378 Adjusted Free Cash Flow*** 2,263 500 0 *$581 MM dividends plus $1,455 MM share repurchases **Includes cash capital expenditures, acquisitions, investments and contingent consideration. ***Cash flow provided by operations less cash used for investments. 31 MPC’s Value of Integration 3,500 3,000 RIN $ Distortion Crude Price Decline $MM 2,500 2,000 1,500 Flexible refining system Large retail presence Extensive logistics with considerable optionality 1,000 1Q12 2Q12 3Q12 4Q12 1Q13 2Q13 3Q13 4Q13 1Q14 2Q14 3Q14 4Q14 1Q15 2Q15 3Q15 Gross Margin Indicator Reported Gross Margin 32 % of Crude Capacity Leveraging Existing Capacity to Run Light Sweet Crude 30 25 20 15 10 5 0 Reforming Capacity Industry Average MPC Midwest Source: 2015 Oil & Gas Journal MPC USGC 44% sweet crude oil throughput in 3Q 2015 versus 68% sweet crude oil capacity Reformer capacity captures full value of light crude processing Additional value added through aromatics production 120 U.S. Aromatics Capacity MBPCD 80 40 0 Sources: Argus DeWitt Aromatics Reports 2011-2012 and MPC internal data. Benzene, toluene, mixed xylenes, and cumene shown. Xylene revised. 33 Increasing Light Sweet Crude and Condensate Capacity Condensate splitters Condensate Processing Opportunity – Canton: 25 MBD • Completed 4Q 2014 – Catlettsburg: 35 MBD Light Naphtha to Gasoline Blending Ultra-Sweet Condensate New Fractionator Distillates to Hydrotreating • Completed 2Q 2015 – $250 MM investment – >30% ROI for each project Light crude processing – Robinson: +30 MBD light crude – $140 MM investment – ~30% ROI, 2016 completion Heavy Naphtha to Reforming Heavier Components Conventional Crude Existing Crude Unit To Downstream Process Units 34 Rising MPC Finished Product Exports 350 300 250 MBD 200 150 100 50 0 2010 2011 2012 2013 2014 Sept 30, 2015 YTD 35 Growing Gulf Coast Export Capabilities Export investments totaling ~$120 MM Added new 500,000 barrel export tank at Garyville in 2013 – +20 MBD Gasoline – ~30% ROI Galveston Bay in 2016-2018 – +115 MBD Gasoline – ~35% ROI 395 400 MBD Garyville in 2015 510 500 Galveston Bay in 2015 – +30 MBD ULSD – ~40% ROI Export Capacity 600 320 345 2013 2014 300 200 150 100 0 2012 2015E 2018+E 36 Capitalizing on Global Growth in Diesel Demand Distillate Production 700 MBD 600 Garyville +35 MBD ULSD in 2014-2016 500 – $232 MM investment 400 – ~45% ROI 300 2012 2013 2014 2015E 2016E 2017E Galveston Bay +9 MBD ULSD in 2015 % of Crude Throughput – $16 MM investment Distillate Production 38 – ~50% ROI Robinson +5 MBD ULSD in 2015 36 – $77 MM investment 34 – ~30% ROI 32 2012 2013 2014 2015E 2016E 2017E 37 MPLX/MPC Utica Build-Out Connectivity 38 MPLX Developing a Comprehensive Utica System Cornerstone Pipeline and Additional Opportunities Industry solution, 16-inch pipeline connecting Utica Shale region to East Sparta, Ohio, tank farm ~$250 MM capital investment – Includes tank farm expansion Late 2016 completion est. East and West connectivity options – River access via Midland/Wellsville – MPC’s Canton/Detroit/Robinson refineries – Third-party refineries and pipelines Other Utica organic growth opportunities being evaluated 39 MPLX Distributions and Sales Proceeds to MPC* 40 $MM 30 20 10 $19.7 $24.1 $20.7 $16.6 $17.5 $18.5 3Q13 4Q13 LP Distributions 1Q14 2Q14 3Q14 4Q14 1Q15 2Q15 GP Distributions, including IDRs 2013 2014 $15.8 $15.1 $31.3 $27.3 $9.8 0 1Q13 2Q13 Cash Distribution and Asset Sales Proceeds from MPLX ($MM) 1Q 2Q 3Q 4Q 1Q 2Q 3Q15 2015 3Q 4Q 1Q 2Q 3Q GP Distributions, including IDRs 0.3 0.4 0.4 0.5 0.6 0.8 1.1 1.5 2.4 3.9 6.3 LP Distributions 9.5 14.7 15.4 16.1 16.9 17.7 18.6 19.2 21.7 23.4 25.0 Total Cash Distributions Received 9.8 15.1 15.8 16.6 17.5 18.5 19.7 20.7 24.1 27.3 31.3 Cash Sales Proceeds - 100.0 - - 310.0 - - 600.0 - - - Equity Value from MPLX - - - - - - - 200.0 - - - Total Asset Sales Proceeds - 100.0 - - 310.0 - - 800.0 - - - *Based on quarter in which distributions were received 40 Generating Significant Cash Flow Through All Cycles Pro forma EBITDA adjusted for current configuration Pro forma EBITDA 8,000 $MM 6,000 4,000 2,000 0 2009 2010 2011 2012 Pipeline Transportation Depr. & Amort. less corporate expense GME Galveston Bay 2013 2014 Speedway Refining and Marketing DHOUP Hess Retail 2009 thru 2014 MidCycle 41 Sustaining Core Liquidity Needs Target cash balance of $500 MM - $1.0 B Requirements Ongoing Operating Cash-Flow Requirements – Maintenance/Sustaining Capital – Interest Payments – Dividend Payments Contingent Calls on Corporate Liquidity - Probability Adjusted – Contingent and Uncommitted Letters of Credit – MPC Credit Shock and Impact on Unsecured Lines (Crude Purchases) – Major Operating Upset – Working Capital Shock Reduced by - Cash Flow from Operations Under Stressed Scenario Liquidity Sources Committed Facilities – MPC Revolving Credit Facility – Trade Receivables Facility* $2,500 MM $1,000 MM Implied Cash and Near-Cash Equivalents Targeted Cash and Near-Cash Equivalents * September 2015 availability was approximately $800 million. Availability is a function of refined product selling prices. 42 Strong Macro Environment for U.S. Refining USGC LLS 6-3-2-1 Chicago LLS 6-3-2-1 20 20 15 15 10 10 5 5 0 0 -5 -5 Jan Feb Mar Apr May Jun 2012 2013 Jul Aug Sep 2014 Oct Nov Dec 2015 Jan Feb Mar Apr May Jun 2012 2013 Jul Aug Sep 2014 Oct Nov Dec 2015 Sources: NYMEX, Argus 43 Macro Outlook Expect crude prices lower for longer Forward values for the Brent-WTI differential are favorable Predicting volatile crude differentials $100 WTI $8 $90 $7 $80 $6 $70 $5 Brent-WTI $110 Brent $100 $90 $/BBL $4 $50 $3 $50 $40 $2 $40 3Q14 4Q14 1Q15 2Q15 3Q15 Prompt 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 2Q17 3Q17 4Q17 $60 3Q14 4Q14 1Q15 2Q15 3Q15 Prompt 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 2Q17 3Q17 4Q17 $/BBL $70 $60 3Q14 4Q14 1Q15 2Q15 3Q15 Prompt 4Q15 1Q16 2Q16 3Q16 4Q16 1Q17 2Q17 3Q17 4Q17 $/BBL $80 Sources: CME, ICE futures as of October 28, 2015 44 Growing Global Product Demand 120 Actual Compounded Annual Growth Rates 2030 vs. 2014 Forecast 100 80 +1.2% Other Other MMBD Fuel Oil Fuel Oil 60 -1.0% Distillate Distillate +1.2% Gasoline Gasoline +0.8% 40 20 Distillate and gasoline demand continues to rise Fuel oil continues to decline on economics and emissions issues 0 “Other” consists of refinery gas, liquefied petroleum gas (LPG), solvents, petroleum coke, lubricants, wax, and other refined products and refinery fuel “Distillate” includes jet fuel “Gasoline” includes naphtha Sources: BP Statistical Review Estimate of World Energy, MPC 45 Rising North American Crude & NGLs Production 25 2015 Forecast Actual 20 MMBD Canada 15 10 U.S. 5 0 1985 1990 1995 2000 2005 2010 2015 2020 2025 2030 Sources: EIA, CAPP, MPC 46 Growing Crude Oil Supply 5,000 2014 4,000 MBD 2014 Texas 3,000 MBD North Dakota MBD 1,800 1,500 1,200 900 600 300 0 2,000 1,000 ← Actual 1990 2000 2010 Forecast → 2020 2030 Canada +1,584 MBD ← Actual 0 1990 2000 2010 2020 2030 2014 Ohio ← Actual 1990 2000 2010 Forecast → 2020 2030 Bakken +604 MBD Utica +78 MBD Niobrara +163 MBD Permian +648 MBD MPC Refinery Forecast → 150 125 100 75 50 25 0 Total U.S. Growth +1,934 MBD Total Growth 2014 – 2030 +3,520 MBD Eagle Ford +411 MBD Sources: EIA, CAPP (June 2015), MPC 47 Refining Capacity in Advantaged Regions 100% in PADDs II and III Canadian Bakken Utica 100% 80% PADD IV 60% PADD II PADD V 40% PADD I 20% 0% MPC PADD II VLO PADD III HFC PADD I PSX PADD IV Source: Oil & Gas Journal effective December 31, 2014 TSO PADD V PADD III Permian Basin Eagle Ford Gulf of Mexico Canadian 48 Refinery Capacity BPCD NCI* Garyville 522,000 11.4 Galveston Bay 451,000 13.3 Catlettsburg 242,000 10.2 Robinson 212,000 10.1 Detroit 130,000 9.8 Canton 90,000 8.0 Texas City 84,000 8.0 Total 1,731,000 11.1** The Nelson Complexity Index is a construction cost-based measurement used to describe the investment cost of a refinery in terms of the process operations being conducted. It is basically the ratio of the process investment downstream of the crude unit to the investment of the crude unit itself. This index has many limitations as an indicator of value and is not necessarily a useful tool in predicting profitability. There is no consideration for operating, maintenance or energy efficiencies and no consideration of non-process assets such as tanks, docks, etc. Likewise it does not consider the ability to take advantage of market related feedstock opportunities. *Nelson Complexity Index calculated per Oil & Gas Journal NCI Formula **Weighted Average NCI Source: MPC data as reported in the Oil & Gas Journal effective December 31, 2014 49 Balance in Refining Network Canton (Ohio) 90,000 Catlettsburg (Ky.) 242,000 Detroit (Mich.) 130,000 Robinson (Ill.) 212,000 Galveston Bay (Texas) 451,000 Texas City (Texas) Garyville (La.) Total Midwest Capacity 674,000 BPCD 84,000 522,000 1,731,000 Texas Capacity 535,000 BPCD Louisiana Capacity 522,000 BPCD Source: MPC data as reported in the Oil & Gas Journal effective December 31, 2014 50 U.S./Canada Key Existing and Planned Pipelines MBPD Pipeline In Service Date 300 Line 9 Reversal 2015 300 SAX 2015 200 Diamond 2017 450 Dakota Access 2017 450 ETCO (Trunkline Conversion) 2017 225/375 Sandpiper 2017 300 +590 Trans Mountain Trans Mountain Expansion Current 2018 830 Keystone XL 2018 525 Northern Gateway 2019 1,100 Energy East 2020 Sources: Publicly available Information 51 Compelling Advantage for Pipeline and Marine All costs shown as $/BBL Pipeline costs exclude any storage or transfer fees and line loss Sources: MPC, publicly available information 52 Creating Crude/Condensate Advantage Source: MPC 53 Key Strengths Balanced Operations Crude Slate Crude Oil Refining Capacity 61% 39% PADD II 56% PADD III Sour Crude 44% As of Sept 30, 2015 Sweet Crude 3Q 2015 Assured Sales of Gasoline Production (Speedway + Brand + Wholesale Contract Sales) Assured Sales ~70% ~30% Wholesale and Other Sales 3Q 2015 54 Speedway Value Total Gross Margin Mix 2011-2014 Average Top-tier performance in the convenience store industry Scalable technology and organizational infrastructure Light Product 37% Merchandise 63% Disciplined expense control Highly successful consumer loyalty program Leverage integration value within MPC’s infrastructure 55 Growing Speedway Segment EBITDA* 800 696 143 $MM 600 400 200 0 404 2010 381 424 487 2011 2012 2013 Legacy Speedway 553 2014 Hess *Non-GAAP disclosure, see appendix for reconciliation to Speedway segment income from operations 56 Acquisition of Hess Retail Transaction Overview Hess retail acquisition included: – 1,245 company operated locations – Transport fleet with capacity to transport ~1 B gal/yr. – Pipeline shipper history in various pipelines, including ~40 MBPD on Colonial Pipeline – Prime undeveloped real estate bank for organic growth Total consideration of $2.82 B – $2.37 B base purchase price – $191 MM working capital – $263 MM capital leases cash settled Unique acquisition opportunity of premier East Coast locations Financed with a combination of debt and available cash Transaction closed on September 30, 2014 57 Transformative Transaction for MPC and Speedway Accelerates strategy to grow higher valued and stable cash-flow businesses Provides larger integrated platform for growth in new markets Meaningfully expands scale and provides multiple levels of strategic optionality Continued commitment to balance value enhancing investments in the business with capital returns to shareholders 58 Enhances Strategic Value for Integrated System Refined Product Placement Opportunities Incremental 200 MBPD of refined products placement capacity, increases assured gasoline Incremental supply of MPC Gulf Coast refined products to northeast and southeast markets Logistics Opportunities Increases utilization and optimization of MPC terminals with incremental 70 MBPD of throughput Dual Marketing Area Speedway Marketing Area Hess Marketing Area Refineries Connecting Pipelines Light Product Terminals Note: Includes owned and third-party terminals Water Terminals Marketing Potential Growth platform for further expanding Speedway, Marathon Brand and Wholesale Light Product Supply Strategy Existing supply and terminal agreements provide near term competitive supply with upside potential to aggregate volumes and further reduce costs Optimize supply in southeast market through existing production and logistics assets Leverage Midwest and Gulf Coast production to provide supply to the New York Harbor 59 Synergies and Marketing Enhancements Will Drive Value Earnings Opportunities 400 70 $MM 300 45 200 100 0 40 35 365 175 2013 Pro Forma Hess EBITDA* Form 10 WilcoHess Synergies Operating and G&A Expense Synergies Sources: Company reports, MPC internal estimates Light Product Supply and Logistics Marketing Enhancements 2017E Hess EBITDA *Sept. 30, 2013 Form 10 Pro Forma annualized Synergies and Marketing Enhancements 190 200 70 $MM 150 100 50 75 20 45 10 20 2014E* 2015E 0 WilcoHess Synergies Light Product Supply and Logistics 120 25 45 20 30 2016E 45 40 35 2017E Operating and G&A expense synergies of $75 MM Integrated light product supply savings of $45 MM Additional sales uplift and merchandise margin enhancement of $70 MM Expedited integration and transition process due to spin-off preparation Operating and G&A Expense Synergies Marketing Enhancements *Based on Oct. 1, 2014 closing 60 Focus on Improving Light Product Breakeven 13 12.39 Light Product Breakeven (cpg) 11 Each 1.00 cent per gallon improvement = ~$30 MM annual pretax earnings 9 7 LPBE = 7.13 5 3 2.56 1 -1 2005 Speedway 2013 Hess Sept. 30, 2013 Form 10 Estimate Total Expenses – Merchandise Margin Light Product Volume Measure of operating efficiency and merchandise contribution to total expense Potential to drive substantial value in the business over time 61 Speedway and Hess Side-by-Side Comparison Hessa Company Operated Sites Fuel Sales (gallons/store/month) Fuel Margin ($/gallon) Merchandise Sales ($/store/month) Merchandise Margin ($/store/month) Speedwayb 1,255 1,478 198,500 177,400 $0.137 $0.144 $111,000 $176,800 $29,200 $46,500 Speedway generates an incremental $17,300 of merchandise margin per store per month ~$250 MM of additional annual merchandise margin potential across Hess retail a) 2013PF data provided in Hess Retail Corporation Form 10 SEC filing b) 2013 data provided in Marathon Petroleum Corporation 10K SEC filing 62 Allocating Capital to Higher Valued Businesses 2012 – 2015 Capital Investment Profile 3,000 2,500 $MM 2,000 1,500 1,000 500 0 2012 Refining & Marketing, excluding Midstream 2013 Midstream 2014 Pipeline Transportation 2015E Speedway Other Excludes Galveston Bay, Hess retail, and pending MarkWest acquisitions 63 2015 Significant Capital Projects 2015 Capital Budget - $2.5B Refining & Marketing – margin-enhancing projects Corporate & Other Speedway 18% 5% 27% Refining Sustaining Capital – Increase light crude capacity at Robinson – Distillate growth at Garyville, Galveston Bay and Robinson – Product export growth at Garyville and Galveston Bay – Galveston Bay/Texas City synergy projects Speedway – growth – Integration and remodel of Hess retail sites – Continued expansion into new markets Midstream – growth 35% Midstream* – Sandpiper pipeline investment – Southern Access Extension pipeline investment 15% Refining Margin Enhancement *Includes Pipeline Transportation segment and midstream investments included in the R&M segment. *Excludes pending MarkWest acquisition. – – – – Cornerstone pipeline and related build-out Patoka to Lima pipeline expansion Robinson butane cavern Catlettsburg condensate splitter 64 Capital Expenditures & Investments ($MM) MPC Refining & Marketing 2015 Budget 3Q 2015 YTD 1,042 215 550 234 83 184 1,276 298 734 Speedway 452 130 275 Pipeline Transportation 659 114 352 Corporate and Other 140 33 95 2,527 575 1,456 Midstream Total Refining & Marketing Segment Total Capital Expenditures & Investments* *Includes MPLX Note: Excludes capitalized interest and pending MarkWest acquisition ($MM) MPLX Growth Maintenance Total Capital Expenditures & Investments 2015 Budget Revised 3Q 2015 YTD 178 52 120 32 9 17 210 61 137 Note: Excludes capitalized interest and pending MarkWest acquisition 65 Renewable Fuels Corn Ethanol Plants – 67% equity interest* in Greenville, Ohio • 110 MM gallon/year capacity – 60% equity interest in Clymers, Indiana • 110 MM gallon/year capacity – 43% equity interest in Albion, Michigan • 55 MM gallon/year capacity – The Andersons operates the plants and provides all the facility services Biodiesel Refinery – 100% owner in Cincinnati, Ohio – 60 MM gallon/year capacity – Generates 90 MM RINs per year – Supplied by both truck and rail, with river access in close proximity *Direct and indirect 66 Annual Price and Margin Sensitivities $MM (After Tax) LLS 6-3-2-1 Crack Spread* Sensitivity ~$450 (per $1.00/barrel change) Sweet/Sour Differential** Sensitivity ~$200 (per $1.00/barrel change) LLS-WTI Spread*** Sensitivity ~$100 (per $1.00/barrel change) Natural Gas Price Sensitivity ~$140 (per $1.00/MMbtu change in Henry Hub) *Weighted 38% Chicago and 62% USGC LLS 6-3-2-1 crack spreads and assumes all other differentials and pricing relationships remain unchanged **Light Louisiana Sweet (prompt) - [Delivered cost of sour crudes: Arab Light + Kuwait + Maya + Western Canadian Select + Mars] ***Assumes 20% of crude throughput volumes are WTI-based domestic crudes 67 MPLX’s Priorities for Investors Maintain Safe and Reliable Operations $90 Unit Price $80 $60 $50 $40 Oct-15 Jul-15 Apr-15 Jan-15 Oct-14 Jul-14 Apr-14 Jan-14 Oct-13 $20 Jul-13 Grow Through Acquisitions $30 Oct-12 Pursue Organic Growth Opportunities IPO Apr-13 Focus on Fee-Based Businesses $70 Jan-13 Sustain Long-term LP Distribution Growth; 29% in 2015, 25% CAGR through 2017, and approximately 20% in 2018 and 2019 Source: Thomson Reuters 68 MPLX and MPC are Aligned MPLX Organizational Structure MPC views MPLX as integral to its operations and is aligned with its success and incentivized to grow MPLX Marathon Petroleum Corporation and Affiliates (NYSE: MPC) 100.0% ownership interest 69.5% LP interest Public MPLX GP LLC (our General Partner) 2.0% GP interest 0.5% limited partner interest MPLX LP (NYSE: MPLX) (the “Partnership”) 28.5% LP interest r 100.0% ownership interest MPLX Operations LLC 99.5% GP interest 100.0% ownership interest MPLX Pipe Line Holdings LP (“Pipe Line Holdings”) 100.0% ownership interest 100.0% ownership interest Marathon Pipe Line LLC (“MPL”) Ohio River Pipe Line LLC (“ORPL”) MPLX Terminal and Storage LLC MPLX assets consist of a 99.5% GP interest in Pipe Line Holdings, as well as 100% ownership in the Neal, W.Va., Butane Cavern MPC retains the remaining 0.5% LP interest in Pipe Line Holdings MPC also owns 69.5% LP interest and 100% of MPLX’s GP interest and IDRs As of Sept. 30, 2015 69 MPLX Deficiency Payment Effect Example For illustrative purposes only Quarter 1 Quarter 2 Quarter 3 Quarter 4 Quarter 5 Quarter 6 Quarter 7 Quarterly deficiency payment 2 5 3 5 - - - Use or expiration of credit (on or before) - - - - 2 5 3 Cumulative deferred revenue 2 7 10 15 13 8 5 Distributable cash flow Yes Yes Yes Yes No No No Adjusted EBITDA No No No No Yes Yes Yes ($MM) 70 Incentive Distribution Rights 3Q 2015 distribution of $0.4700/unit is in top tier of IDRs 71 4Q 2015 Outlook Crude Throughput* Other Charge/ Feedstocks Throughput* Total Throughput* Percent of WTI-priced Crude Turnaround and Major Maintenance 4Q 2014 Projected 4Q 2015 in MBD Gulf Coast Region Midwest Region MPC Total Gulf Coast Region Midwest Region MPC Total Depreciation and Amortization Other Manufacturing Cost** Total Direct Operating Costs Corporate and Other Unallocated Items*** Refinery Direct Operating Costs**** 1,000 200 1,200 4% $1.20 $1.10 $4.15 $6.45 600 50 650 44% $2.90 $1.95 $4.70 $9.55 1,600 200 1,800 19% $1.85 $1.40 $4.50 $7.75 996 205 1,201 5% $1.98 $1.11 $4.37 $7.46 647 48 695 48% $1.30 $1.73 $4.59 $7.62 1,643 217 1,860 22% $1.77 $1.37 $4.52 $7.66 $130 MM $88 MM *Region throughput data includes inter-refinery transfers, but MPC totals exclude transfers **Includes utilities, labor, routine maintenance and other operating costs ***Includes $58 MM and $6 MM of pension settlement expense in 4Q 2015 and 4Q 2014, respectively ****$/barrel throughput 72 EBITDA Reconciliation to Net Income Attributable to MPC ($MM) 2007 2008 2009 2010 2011 2012 2013 1Q Net income attributable to MPC 2Q 2014 3Q 4Q 1Q 2Q 2015 3Q 4Q 1Q 2Q 3Q 2,262 1,215 449 623 2,389 3,389 725 593 168 626 199 855 672 798 891 826 948 165 30 31 12 (26) (109) (48) (45) (47) (39) (46) (48) (50) (72) (81) (64) (70) - - - - - 4 5 6 5 5 8 9 7 7 12 13 10 1,164 670 236 400 1,330 1,845 378 316 81 338 108 457 333 382 486 432 521 Add: Total segment depreciation and amortization 582 604 670 912 873 972 281 297 294 325 308 312 310 344 350 349 352 Add: Items not allocated to segments 147 (11) 182 265 316 277 67 124 82 93 131 66 97 88 81 77 223 3,990 2,448 1,506 2,188 4,934 6,596 1,504 1,381 677 1,426 800 1,747 1,469 1,691 1,901 1,761 2,124 3,413 1,819 950 1,539 4,309 5,902 1,341 1,155 473 1,248 623 1,524 1,228 1,279 1,583 1,474 1,726 Speedway Segment EBITDA 312 408 343 404 381 424 94 150 131 112 86 123 152 335 231 189 306 Pipeline Transportation Segment EBITDA 265 221 213 245 244 270 69 76 73 66 91 100 89 77 87 98 92 3,990 2,448 1,506 2,188 4,934 6,596 1,504 1,381 677 1,426 800 1,747 1,469 1,691 1,901 1,761 2,124 5,707 6,808 6,822 7,477 Less: Net interest and other financial income (costs) Add: Net income attributable to noncontrolling interests Add: Provision for income taxes Total Segment EBITDA By Segment Refining & Marketing Segment EBITDA Total Segment EBITDA Last Twelve Months Segment EBITDA 73 Reconciliation Adjusted Free Cash Flow to Net Cash Provided by Operations ($MM) 2014 (For the Quarter) Net cash provided by operating activities Additions to property, plant and equipment 2015 LTM 4Q 1Q 2Q 3Q 388 1,190 994 1,069 3,641 (528) (389) (375) (513) (1,805) Acquisitions 10 Investments (72) (42) (107) (72) (293) - - (175) - (175) Total Investments (590) (431) (657) (585) (2,263) Adjusted free cash flow (202) 759 337 484 1,378 Contingent Consideration* 10 *Excludes amounts reflected in net cash provided by operating activities. 74 Reconciliation Adjusted Free Cash Flow to Net Cash Provided by Operations ($MM) Since 9/30/11 Spinoff Net cash provided by operating activities 16,617 Additions to property, plant and equipment (6,000) Acquisitions (4,526) Investments (856) Contingent Consideration* (347) Total Investments (11,729) Adjusted free cash flow 4,888 *Excludes amounts reflected in net cash provided by operating activities. 75 EBITDA Reconciliation to Net Income for Hess ($MM) 2013* 2017E 47 138 (12) - Add: Provision for income taxes 22 78 Add: Depreciation and amortization 94 149 175 365 Net Income Less: Net interest and other financial income (costs) EBITDA *Based on Hess Sept. 30, 2013 Form 10 data annualized 76 Market Indicators Used in Project EBITDA Calculations 2015-2019 ULSD (USGC; $/BBL) $121.80-$128.98 Sour Gas Oil ($/BBL) $118.41 Sweet Gas Oil ($/BBL) $121.35 WTI 3:2:1 Crack Spread ($/BBL) $13.81 77