Marvel Mystery oil -
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post #1 of 2 Old 05-11-2014, 10:28 PM Thread Starter
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1991 XJ Cherokee 
Join Date: Sep 2013
Location: Eugene
Posts: 108
Marvel Mystery oil

How do i use this oil? does it work to help lifter tick?

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post #2 of 2 Old 05-12-2014, 05:41 AM
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1988 XJ Cherokee 
Join Date: Nov 2013
Location: Junction City
Posts: 1,067
I've not used it in a 4.0 yet, but have in other engines with good results.

Simply add to your motor oil & drive normally.

Lifter noises should start to ease (assuming it's a stuck lifter) after a few miles (maybe 100+, depending on how gunked up)

MMO is pretty versatile stuff, you can also use it in your air tools, works wonders. And it smells better than most other air tool oils.
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