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06-15-2013, 05:31 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Pushrod bent?
Really sludgy in there.
Replace the pushrod. Fill with 5 quarts of 15-40 Rotella and 1 quart of Marvel Mystery Oil, using a Napa Gold filter. Run it. Monitor the progress of cleaning the sludge up by looking through the oil filler hole with a flashlight.
Really sludgy in there.
Replace the pushrod. Fill with 5 quarts of 15-40 Rotella and 1 quart of Marvel Mystery Oil, using a Napa Gold filter. Run it. Monitor the progress of cleaning the sludge up by looking through the oil filler hole with a flashlight.
06-15-2013, 05:41 PM
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Year: 2001
Model: Cherokee
Engine: 4.0 I6
06-15-2013, 05:58 PM
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Year: 2000
Model: Cherokee
Engine: 4.0
This is the second go around. Slung 3 the first time, non were bent. I gonna replace that one and run it til the next oil change I've already done the mmo and three oil changes in a month trying to clean out the sludge.
06-15-2013, 06:02 PM
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Year: 1990
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Musta been awful before!!
06-15-2013, 06:15 PM
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Year: 1990
Model: Cherokee (XJ)
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Thought about trying something a little stronger than MMO?
06-15-2013, 06:28 PM
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Year: 1990
Model: Cherokee (XJ)
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Maybe Seafoam? 2 quarts of MMO with 4 quarts of Rotella?
06-15-2013, 07:04 PM
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Year: 1989
Model: Cherokee
Engine: 4.0
Originally Posted by bhennessee1
I may try seafoam.
06-15-2013, 07:13 PM
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Year: 1990
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There's a thought. Just use a good filter like Wix or Napa.
06-15-2013, 07:18 PM
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06-15-2013, 07:20 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0