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dknarnd · 11-23-2007, 05:46 AM

I have the OLM in my GMC turck and I usually change when it gets around 20% oil life. Mileage at this point is around 6,000 to 7,000 miles and the oil still looks pretty good but I still change it. I'm going to change it this weekend and was thinking of sending in some for an OLA just to see what it tells me.

11-23-2007, 05:46 AM	#9 (permalink)
dknarnd Gold Member Join Date: May 2005 Location: Columbia County, PA Posts: 409	Re: GM Oil Life Monitor I have the OLM in my GMC turck and I usually change when it gets around 20% oil life. Mileage at this point is around 6,000 to 7,000 miles and the oil still looks pretty good but I still change it. I'm going to change it this weekend and was thinking of sending in some for an OLA just to see what it tells me.