06 Express Cargo Trainy Fluid recommendation

Hey, crew.
My name is Paul. I have 06 Express Cargo with 4.8 Vortec. It has 85000 mi and I would like to change oil in trainy, but don't know what oil to get and what would be the best stuff money can buy, cause $4,200 to rebuild trainy can buy alot of oil changes, (my brother just got his done)

I don't know what brand would be the best, syntetic vs regular, additives or not.

Any advise would help.


PS
I am in States.

Thanks

Any fluid that is Dexron VI meets the latest and highest standards. As long as the fluid is Dex VI whether Valvoline, Castrol, etc. you'll be ok. I would recommend getting an A/C Delco filter kit.

Thanks.
I just found out that in order to change firlter in trainy, I have to take off an exhaust. Bummer.

Thanks again.

Any idea if Libro Molly makes oil that would work for Chevy Trainy?