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Old 03-06-2019, 07:30 PM
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Blue Bowtie Blue Bowtie is offline
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Re: 04 Rondezvous lifter problem.

I run Mobil1 in everything I have, including the air-cooled engines. My daughter recently reported that her Envoy was flashing a "low oil pressure" warning and the gauge was jumping from 0 to 40. I got it in the shop and discovered it was 8,000 miles overdue (12,000 miles total) for oil changed. It was sludged enough that I had to poke the drain hole with an awl after removing the drain plug to get it to drain with more than just a trickle.

Synthetic will sludge, too.
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