[Techdude99]

Thanks for the tips.

I replaced my 0w40 oil with 15w50 Mobile1 & a PF64 filter along with the GM differential fluid at the recommended intervals on my 2019. Torqued the differential bolts to 24ft/lbs and oil drain bolt to 30.

A few metal shards on the top tranny plug. The refill took the factory spec of exactly 1.2 quarts.

I'm getting an oil analysis on the 0w40 to see if it's safe to run at the track with my fast but not aggressive driving style and will test the 15w50 at the next oil change along with an eBay Neodymium magnetic oil drain plug.