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The low oil pressure condition you're describing is the result of worn rod and/or main bearings. Often the result of infrequent oil changes. Try a heavier grade oil. If you've been using 5W15 oil, try 10W30 or even 15W40. That can give you some more miles from the engine. But keep the oil and filter clean and change them according to the manufacturers specifications.

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Q: 2000 Cherokee Sport 97000 I start it the oil press 40 after warm up it goes to 15 or 20 and when you stop it drops my check gage comes on when you gas it it goes back to 15 0r 20?
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