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Old 06-16-2018, 01:46 PM   #47
Iron Lung Jimmy

 
Drives: Iron Lung, Jimmy
Join Date: Jun 2009
Location: Louisiana
Posts: 1,577
Quote:
Originally Posted by PDXSSCE View Post
The last oil change on my L99 was in November. I've driven the car 1,000 miles since then. The most recent OnStar report states 90% oil life.
I'm concerned about it being 7 months ago though. Should the oil be changed or is it fine?





Note: I realize it's an old thread, but I don't see the point of starting a new thread to ask a similar question.
When you get to a year, OnStar will tell you the oil should be changed.

I'm not sure what supposedly happens after a year, but I obediently changed it. I think you're fine at 7 months.
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