| Re: 6.0 Liter engine oil i change my oil every 3500miles using mobil 1 just for piece of mind. but that change oil light doesn't mean your oil hasn't been change if you turn the key to start you car one turn not the engine then press the gas three times then turn your engine on it will say 100% oil life. but i would change the oil just to be safe then do that. i think they come out the dealer with mobil 1 |