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    What oil for 97 jeep 4.0 ?

    FWIW on an old thread, these motors ALL develop a bit of a lifter tick. And I am convinced it's because 99.9% of the people that drive them don't know about the Flat Tappet Camm/ZDDP scenario. I changed out my noisy cam and lifters, that were visibly worn and it's as quiet as a mouse now. I'm...
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