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Old 04-30-2002, 10:30 PM
autozen autozen is offline
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Join Date: Jun 2001
Location: Northern Calif. (Fairfield Area)
Posts: 2,225
Oil seals rings which is why you do a wet test on low cylinders during a compression test. You squirt oil into a cyl, and if compression comes up dramatically,there is a problem with rings. You can't seal valves with oil.

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