I just recently bought a Pontiac G8 (6.2 V8) and am getting ready for my first oil change. I mostly drive to/from work each day and the engine barely has enough time to reach operating temperature before I'm there. I don't drive my cars too hard with only an occasional stomp on the gas pedal to get around a slower car. Winters can be pretty rough here in NE Ohio so I'm taking that into account as well. I was thinking a thinner 5w30 like Castrol Edge may be a good choice considering my short commute and how I drive. Any other recommendations?