I have a 92 cadillac seville with 4.9 v8 engine.
I can get unlimited free castrol synthetic 5w-50 oil (used in mercedes)
any experience? Is it a good comparable oil to mobil 1, and will my gas mileage decrease, or could it be "bad" for the engine because when it gets to a 50 weight it will be to heavy and cause extra engine resistance?
any thoughts on 5w-50 appreciated. basically i want my engine to run as long as possible, and i can get this oil for free....
I can get unlimited free castrol synthetic 5w-50 oil (used in mercedes)
any experience? Is it a good comparable oil to mobil 1, and will my gas mileage decrease, or could it be "bad" for the engine because when it gets to a 50 weight it will be to heavy and cause extra engine resistance?
any thoughts on 5w-50 appreciated. basically i want my engine to run as long as possible, and i can get this oil for free....