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A Look at GM's Oil Life Monitoring System
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06-25-2011, 11:52 AM
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Tallboy
Say "when"...
Drives: 11 2LT
Join Date: Jul 2010
Location: Venice, FL
Posts: 431
Changed mine at 8% which was about 7800 miles. Sent a sample of the oil [synthetic] to Blackstone, they said the oil was just about done, and 10% would be a good time to change.
Tallboy
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