[JSchmitz]

Originally Posted by Tim Corcoran

I never use the rubber seal over the rear cap on the back of the oil pan. I always use a cork gasket, the rubber gasket is problematic and can leak. Even if you don't have the groove in your rear cap for a cork gasket you can still use a cork gasket. SD Performance sell a special cork gasket to go over the rear main if you don't have the cap with a groove.

^^^This^^^