Do they change oil at this walmart?

First come basis

Yes

Yes. Its first come first serve.

Yes. If you want a basic oil change it's in really small writing it's called the pit crew they check the tire pressure air filter in a few other things and do the oil and oil filter I can't do it that cheap at my own house. Ask for that if that's all you want is a basic oil change the rest is just a bunch of them check and other stuff.

Yes, they do.