Jeep oil
1,180

Asked by kellie Jan 20, 2018 at 01:56 PM about the 2002 Jeep Grand Cherokee Limited 4WD

Question type: General

I have a 02 jeep GC 4.7 with 222k should i
run regular covential or high milage syn ??

2 Answers
1,180

kellie answered 6 years ago

Yep iv been using coventinal since iv owned it and no problems . I change my oil so i dont have to worry about getting ripped off .

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2,740

Bill answered 6 years ago

Just make sure you change the oil regularly. These engines are prone to sludge from excessive heat which plugs up the oil return holes at the rear of the heads causing oil starvation and head destruction. This will destroy the 4.7 valve train. Change every 2500 miles and you won't have any problems.

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