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#8
06-22-2007, 05:41 PM
Hummer Veteran
Join Date: Jun 2007
Location: Northern VA
Posts: 148
Re: Synthetic Oil
Good read...
I am always baffled at my OnStar oil life report that reads that my oil has 58% remaining when I've exceeded 4K miles. The dealer wants you in at 3K miles and with synthetics OnStar believes that 8K miles you should change your oil. I have been going in every 4.5K miles.
Last edited by algy : 06-22-2007 at 05:47 PM.
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