No, the part number is from the manual for the right part.

I can only find the ac delco part on ebay.

And so your saying any branded thermostat will be fine?

Well putting in a nicer oil I would assume id get more performance out of it. Im doing 90% highway 10% city and the manual says 7500 mile intervals doing highway is just fine. And it was designed when oils were worse than they are now. And its only got 112k miles.

I might look into that

Miles

As I said in the post, 7500 highway 3500 city. I do 90% highway.

Fuel stabilizer with a full tank. Disconnect battery. Inflate tires slightly above psi reccomended for vehicle but do not exceed the max psi on the tires. Double check your coolants freezing temp.

Its unlikely a bad alternator would cause that, something is wrong with the trans, a mechanic should diagnose it. It may just be low on fluid.

Makes me wonder if I would notice any difference switching from semi castrol 5w-30 to that pennzoil ive seen so much of. Granted its an s10 I would be throwing that nice oil into. But its a low miles one.