kevin phillips Posted October 18, 2008 Share Posted October 18, 2008 I have a 2008 6.4 f-350 with a slow oil leak coming from the top side of the engine in the rear.I have changed the oil and added plenty of dye.The oil ends up on the bell housing and trans filter in a couple hours of idle time after cleaning.It is running down both sides of the block about the same following the head gasket seams in rear.I have looked from the top with mirrors and blacklight with no sign of the leak but it's hard to see from the turbo's back.This truck has had a fuel pump cover gasket installed for a oil leak about two weeks ago cab off at another dealer and the customer says it diddn't change the leak.Any idea's or places to look before i yank the cab monday.thanks Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted October 18, 2008 Share Posted October 18, 2008 I recall being told by an International FSE that there have been issues with oil cooler covers leaking. Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted October 18, 2008 Author Share Posted October 18, 2008 I can't see anything up near the front of the engine.The dye seems to be coming from somewhere turbo's back.i'll give the cooler cover another good check monday but it looked ok behind the oil cooler in the opening behind the fuel and oil filters.I really hate the 6.4 because you can't see shit on them. Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted October 19, 2008 Share Posted October 19, 2008 I really hate the 6.4 because you can't see shit on them. I just plain ol' hate the 6.4 all together right now... Quote Link to comment Share on other sites More sharing options...
rlchv70 Posted October 20, 2008 Share Posted October 20, 2008 Check the turbo drains. The HP turbo drain is a tube with o-rings. The tube can get bent during turbo install, causing a leak. The o-rings could have failed as well. The LP turbo drain is basically a tube incased in rubber. These are less sensitive to failure, but anything's possible. The oil cooler cover is a possibility, but not likely. It would have to fail the interval o-ring, fill the cavity in the block, overflowing and leaking. The turbo oil supply line or the oil sensors could be leaking on top of the cooler cover. It could also be the base of the oil filter housing. Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted October 21, 2008 Author Share Posted October 21, 2008 It looks like it's a possible turbo drain tube o-ring. It was late when i got the cab off today but the oil looks to be coming from the drain where it connects to the turbo on the drivers side. Thanks for the advice. I'll update tommorow if i get to work on it. Quote Link to comment Share on other sites More sharing options...
Jeff_E Posted October 21, 2008 Share Posted October 21, 2008 I think you're on the right track. I had one about a year ago. See THIS POST Quote Link to comment Share on other sites More sharing options...
kevin phillips Posted October 22, 2008 Author Share Posted October 22, 2008 Thats what it was exactly. I somehow overlooked the post when i searched for oil leaks. I have parts ordered for it for tommorow. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
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