Quote:
Originally Posted by bustedbenz
For the last 3 oil changes, I've had an oil leak out the top of my oil filter canister. I can't ever spot a drop actually running down the canister, but there's an oily film all over it where it's obviously had oil not just pouring but slowly oozing down it, fairly constantly from the looks of it.
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Next oil change, get yourself a hand grinding stone, small size, medium grit.
Dry the top of the housing thoroughly and use the grinding stone to carefully work the surface seeking high spots. Don't go crazy.........you're looking for one, maybe two very shiny spots that appear when you pass the stone over the surface. You may also feel some drag on the stone at these points.
It only takes a very slight deformation of the aluminum to cause a leak past the o-ring.
The other possibility is some accumulated debris in the cover. Take some 0 steel wool and polish the inside of the cover where the o-ring sits. Naturally, it's got to be perfectly clean in this counterbore before installing the o-ring.