I know the water leaking in there doesn't help them last long. I don't know why I started shooting oil in there, but I think it was after someone told me they wear out. I have not found it as a required maintenance on mine either.
P.S. Whe ya gonna throw a 350 chevy in that 280Z? I have layed out the required brackets on CAD, and just need a car, a spare drivetrain, and a bunch of free time, and I will do it.........easier than the 4.3 you just did.
