Look for a rear main seal that resembles the OEM. The OEM rear main seal has a spring inside it that helps hold the seal against the crank. The national seal is a suitable replacement. The Fram rear main seal does not have the spring and it does not create a good seal and will leak.Dropped the trans and found what was making all the racket, pivot ball retainer fingers broke off the release lever. Also going to drill/tap the stripped shifter bolt hole, replace rear main seal, and put in new pilot and throw-out bearings while it's down.
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