Needing some help on oil leak issue. I have had my 2015 in the shop on 6 different occasions trying to find out why my truck has a constant oil leak in showing in the typical rear main seal area. They have replaced the rear main seal a couple times, the oil pan gasket, and the latest was the "rear cover gasket" as they called it. The truck has 35,000 miles and has been happening about every 5,000 miles. I am beginning to believe this issue goes beyond a seal and could be a crank or bearing issue? Any help on this would be appreciated.