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So I have noticed that my truck has been putting a few drops of oil on the ground when its idling and can smell oil burning occasionally. I changed the valve cover gaskets and after looking on the forums, I checked to see if I over tightened them and everything is dry above the exhaust manifold. But when you look underneath the exhaust manifold everything is basically caked in oil. But it drips down onto the front axle.
Could this be a head gasket?
I checked the oil filter and its tight but it has oil streaks on it from above it.
I read somewhere that it could be the turbo drainback line.
Forgot to mention the specs:
1993 F250 IDI factory turbo, 5 speed, 4x4, 290,000.
It sounds like it may be the oil cooler leaking. There are some o rings where it bolts up to the block and it sounds like one of them may have failed in this case. The oil cooler is the part that the oil filter threads onto.
A head gasket should not cause an oil leak and if it were leaking your engine would be missing pretty bad.
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