Oil Leak

[littlebigrig6.0]

So I was under the truck the other day, when I noticed I have oil between trans and oil pan, doesnt seem to be dripping but a good enough residue to be concerned. Any ideas

[gary2070]

Mine was the repaired by replacing the rear plate gasket and rear main seal.

[littlebigrig6.0]

whats involved with this, is it something I can do myself, how bad was the bill

[gary2070]

Mine was done under warranty, but you will need to pull the transmission to access both.

[dieseldan2005]

Most 6.0s i have seen leak there. It can be a few things. On your 04 its probably on the top side. Turbo pedistal o rings, icp sensor (early 04). Check in the valley for oil. The bedplate seals and rear mains seem to be more common with 05+ engines. Not that it couldn't still be one of them. My 03 had a rear main put in it.

[littlebigrig6.0]

what is the best way to diagnose the oil leak, im out of warranty, I have not noticed it using any oil, the last time I checked my level was good.

[carolinaboy02powerstroke]

The best way is to start on the top of the motor (the valley) near the front and work your way back until you find oil. If it's up front, then it's most likely HPOP o-rings, if it's near the back, it's most likely turbo pedestal o-rings. If it's neither of those then work your way down between the motor and the tranny, when you find oil, get brake cleaner and clean as well as you can. After cleaning it, start the motor and get a good flash light and locate where you start seeing oil, it may take a trip around the block to create the drip again.

Hope this helps

[dieseldan2005]

Originally Posted by carolinaboy02powerstroke

The best way is to start on the top of the motor (the valley) near the front and work your way back until you find oil. If it's up front, then it's most likely HPOP o-rings, if it's near the back, it's most likely turbo pedestal o-rings. If it's neither of those then work your way down between the motor and the tranny, when you find oil, get brake cleaner and clean as well as you can. After cleaning it, start the motor and get a good flash light and locate where you start seeing oil, it may take a trip around the block to create the drip again.

Hope this helps

Its on a 6.0, the HPOP is in the rear and buried in the engine valley. They don't have o rings that leak like our 7.3's do. At least not in the same areas.

[carolinaboy02powerstroke]

Originally Posted by dieseldan2005

Its on a 6.0, the HPOP is in the rear and buried in the engine valley. They don't have o rings that leak like our 7.3's do. At least not in the same areas.

Ah, good catch, sorry about that. I get carried away trying to help sometimes and overlook which section I am in...my apologizes. Speaking of pedestal o-rings, I gotta change mine

[dieseldan2005]

Hey no problem, it happens to me all the time too, lol.