Bennies of synthetic oil...

Hawaiian Style said:
Hey while were discussing it, I'm down if FL so it's not too cold (20 is about as low as it's ever got) but it's very warm in the summer. Now I'm running Mobil 1 10w30. Any benefit to going to another weight? I'd like to run the same oil in all 3 too, keeps it simple because sometimes I can be a :dunce:

10w40 and 15w40 both do very well in the 4.0, especially in hotter climates and with higher mileage.
 
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