we've used them on the new motor in my 02, and we're experienced oil crawling up the threads of the 2 studs nearest the distributor at the back of the motor. we're sealed both of the openings with some burly gasket sealer type stuff and that seems to have taken care of the problem, but has anyone else expereinced this? does anyone know of a washer or nut/washer combination that would incorporate a built-in seal to eliminate the oil trickle? anyone? thanks.