Originally Posted by Spartan 1771

Those are the exact cans I have. I added a small rubber o-ring around the dipstick and the top bolt (which you'll use if you don't use the breathers). The ring helped to seal those areas properly. I also put a small amount of steel wool inside of the small baffle.

Nissan 370Z Forum - Spartan 1771's Album: Dual Oil Catch Cans