Thread: Anyone have Issues Using Costco Gas in X5m?
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      08-05-2015, 09:27 PM   #20
P1
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Drives: 2004 3/4 ton Duramax
Join Date: Aug 2007
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I actually never fill my tank all the way to full. I usually do half or 3/4 of a tank. My theory? Less weight in the vehicle, better performance...
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