So the GM manual calls for 19333511, which is "medium" strength thread locker which I think would be equivalent to like a Loctite 242. Loctite 242 says it but only acts as a thread locker, it also seals threads, so I guess GM intended these threads to have oil get by them not sure how though.

So when I put them flexplate back in I put permatex "medium" thread locker on them, I wonder if this is enough? I guess maybe after 250k miles the factory applied thread locker eventually leaked. That being said I still think my rear main seal was definately leaking.

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So for anyone wondering, it was defiantly the rear main seal, 0 leaks now finally.

 

**** you really throwing me the bad vibes about my rear main now smh.

 

Thanks for the update!

 

I think the give away for it being a rear main seal is looking through the bellhousing view hole and looking behind the torque converter and flywheel and seeing the bottom of the cover wet. There won't be drips or anything but it will be wet.