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Old 08-14-2006, 11:26 AM   #4
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Join Date: Jan 2006
Location: merritt island, Florida
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Re: Excessive Oil Consumption

Use the high mileage 5w-30 that has the additives to keep the oil seals working better and the 5w for startup lube as GM states. My daughters 98 has 155k now and uses/burns about a qt every 2000 miles - good would be 1 qt per 3000 on older motors. After I replaced the oil cooler line leaks are mostly gone - only a few minor drips. If you go syn you will run low before changes and its a chore to get them to check it!
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