MPLX LP Increases Quarterly Distribution

FINDLAY, Ohio, Jan. 24, 2014 - MPLX LP (NYSE: MPLX) today announced a cash distribution of $0.3125 per common unit for the fourth quarter of 2013. This represents an increase of $0.015 per unit, or 5 percent, over the previous quarterly distribution and a 19 percent increase over the minimum quarterly distribution at the time of MPLX's initial public offering (IPO) in October 2012. MPLX has increased its distribution every quarter since its IPO. The distribution will be paid Feb. 14, 2014, to unitholders of record Feb. 4, 2014. On Jan. 29, MPLX will provide an update on its 2013 fourth-quarter and full-year results through an earnings news release, to be followed by a conference call scheduled for 2 p.m. EST that day. Interested investors can listen to the conference call on MPLX's website at by clicking on the "2013 Fourth-Quarter and Full-Year Financial Results" link in the "News & Headlines" section. This release is intended to be a qualified notice under Treasury Regulation Section 1.1446-4(b). Brokers and nominees should treat 100 percent of MPLX's distributions to foreign investors as being attributable to income that is effectively connected with a United States trade or business. Accordingly, MPLX's distributions to non-United States investors are subject to federal income tax withholding at the highest applicable effective tax rate. ### About MPLX LP MPLX is a fee-based, growth-oriented master limited partnership formed in 2012 by Marathon Petroleum Corporation to own, operate, develop and acquire pipelines and other midstream assets related to the transportation and storage of crude oil, refined products and other hydrocarbon-based products. Headquartered in Findlay, Ohio, MPLX's assets consist of a majority equity interest in a network of common carrier crude oil and products pipeline assets located in the Midwest and Gulf Coast regions of the United States and a 100 percent interest in a butane storage cavern located in West Virginia. For additional information about the company, please see our website at Investor Relations Contacts: Beth Hunter (419) 421-2559 Geri Ewing (419) 421-2071 Media Contacts: Angelia Graves (419) 421-2703 Brandon Daniels (419) 421-3127 MPLX LP Distribution: This announcement is distributed by GlobeNewswire on behalf of GlobeNewswire clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: MPLX LP via GlobeNewswire [HUG#1756881]