So my cousin’s 1990 Mustang 5.0 has been sitting in the garage for almost two years. He put it away with race gas in the tank so it wouldn’t go bad fast he says. So now he’s buying a new battery and will do an oil change. I know everyone likes to change their oil out with a warm engine. Should he just top off the oil and try to start/warm it up first before changing out the old oil or just dump it out cold and fire it up with the fresh oil?