oil system issues
CF Veteran
Joined: Oct 2011
Posts: 1,268
Likes: 1
From: Bakersfield CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
The contents of Marvel Mystery Oil were 74 percent mineral oil, 25 percent stoddard solvent, and 1 percent lard.
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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
CF Veteran
Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
Well, I guess airplane engines don't like that stuff hahaha!
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Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Nope engine runs smooth gets lighter as the engine warms but i loose a little oil pressure, never gets above 40 psi accept on cold start, idk as long as it runs well im not gonna dig into it to far i guess. Whats the typical oil pressure of the I6 suppose to be at running temp?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Nope engine runs smooth gets lighter as the engine warms but i loose a little oil pressure, never gets above 40 psi accept on cold start, idk as long as it runs well im not gonna dig into it to far i guess. Whats the typical oil pressure of the I6 suppose to be at running temp?
Seasoned Member
Joined: May 2013
Posts: 448
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From: Sucka Free East Bay Cali
Year: 2000
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Oct 2011
Posts: 1,268
Likes: 1
From: Bakersfield CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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