Oil gage
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Joined: Aug 2011
Posts: 43,971
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Remove your oil filler cap and shine a light in the hole to see if you need it.
I've used a quart of Marvel Mystery Oil for 1,000 miles or so before changes and it cleans things up well. I've found though that using Rotella seems to continue cleaning things up.
I've used a quart of Marvel Mystery Oil for 1,000 miles or so before changes and it cleans things up well. I've found though that using Rotella seems to continue cleaning things up.
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