** Shares of Marathon Petroleum MPC.N fall 8% to $183 premarket
** Co posts Q3 adjusted profit of $3.01 per share vs analysts estimates of $3.15 per share, per LSEG data, as higher refining turnaround costs and operating expenses offset stronger margins and throughput
** Quarterly refining planned turnaround costs - or the expenses the company expects to incur during scheduled maintenance or temporary shutdowns - stood at $400 million, compared with $287 million a year earlier
** Up to last close, stock up 40% YTD
(Reporting by Pranav Mathur in Bengaluru)
((Pranav.Mathur@thomsonreuters.com;))