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Old 01-19-2018, 04:06 AM   #10
paul somlo
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Join Date: Sep 2006
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There's also a rubber profile gasket between the lower chain case and the underside of the head. The profile gasket between upper and lower covers butts up against it. Where they meet can be a source of leaks. A word of warning - if you remove the lower chain case to replace that gasket, there's a good chance that you'll need to remove the head in order to get the new (uncompressed) gasket in.

If you shine a flashlight rearwards of the base of the oil filter housing, you'll see oil puddling on the block, if there's a leak there. The oil pan tends to leak on the "downhill" side (passenger), as the level of oil is close to the mating surface. If that's the case, the leak is worse the more oil is in the pan.
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