What type of oil(Mobil 1 S) is only to be used, but what weight are they using when you get your oil changed? I know two choices 5-30 and 10-30. Which oil do you prefer or does anybody care? I've always had 5-30 and now the dealer put 10-30, I'm a little pissed :mad: or does anyone think I'm being petty?
Thanks, I just am leary taking my car into the dealer. One would assume (we know what happens when we a**-u-me). I'm aware that only M1S is to be used, but are they?- since the oil change my oil temp is hovering around 235 when I decide to play around. Even though previous changes have been fine, this service visit made me a bit nervous. Anyway, I will return to that dealership.
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Another LS engine comin' up. 
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