after a year of dealing with a moderat oil leak which gets all over the exhaust manifold and cat at highway speed...i detected the source! the motor mounts after 340,000 miles....well they are toast...how can this cause an oil leak you ask??? well the engine torques over so far...as per the shot mounts, that the oil filter presses against the rubber part of the engine mount thusly cocking the filter over just enough to cause a leak, but not enough to be a huge prob. all this time i thought i had a busted crank seal....who woulda thought?