Thank you.

I changed to synthetic after 65K. The maun seal leak seems to be intermitment. It got better after I changed to High Mileage oil that addresses main seal issues, but that was during colder weather. I'm going to replace the PCV, and then watch. If it persists, then maybe Bar's main seal sealent additive? I hate to pull the tranny for such a small leak, but it bothers me and synthetic oil is expensive to keep pouring into a leaky crank case. (Is there anything elae that can leak directly above the main seal area? Probably not. )