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Old 09-25-07, 12:00 PM
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Cadillac(s): White Diamond '03 DHS
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Join Date: Jun 2004
Location: Woodstock Ill.
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Re: Oil Life % vs. Reality

No, the OLM does not know that you have added a fresh qt. every 1000 miles. That is just added insurance.

You can use synthetic or high mileage oil if you want. Won't be a problem. Remember, there is about a 100% safety margin built in to it.