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July 14th, 2003, 10:42 AM
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What weight motor oil do you guys run ?
My owners manual says to use10w30 in my TTA,
but I was wondering if I could go a little heavier since I only drive the car in hot weather. Right now I'm using Mobil1 full synthetic 10w30. I would like to know what you guys are running in your TTA's ? Thanks James     
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July 14th, 2003, 02:10 PM
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Winter: 5-30
Summer: 10-30 Gm engineers have reasons to recommend what they do, I trust their advice. 
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