Just replaced my timing chain and the gasket for the cover. Also replaced oil pan gasket. rear main seal is still dry on this Dodge 3.3L with 86K You know, I've been using Pennzoil and thought about syn, but to be honest guys, I change too early and too often, so I'm alreayd talking myself out of it here in this thread. However...I was thinking of moving over to a High Mileage oil, but now that I have new gaskets, is it really a moot point? (considering the engine is in perfect shape that is)???