Ok I drive a 1994 Chevy Cavalier RS Coupe and it has a 3.1 liter multi port fuel injected 6 cylinder V6 with about 118,000 miles on it right now and its about time for its next oil change and im wondering what the best oil to use for my specific car?I was thinking about useing castrol syntec high mighleage oil but ive heard it isnt as good as its claimed to be so can someone tell me what oil should I use.Im looking to get the best performance out of my car.