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Old Jul 11, 2011 | 02:55 AM
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Captain_America
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From: Riverside, California
Year: 1988
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Engine: 4.0 Low Output
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What are the fluid coolers, cooling 4.3?
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Old Jul 11, 2011 | 08:41 AM
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4.3L XJ
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Year: 1986
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Originally Posted by Captain_America
What are the fluid coolers, cooling 4.3?
Engine oil and transmission oil
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Old Jul 11, 2011 | 04:26 PM
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Year: 1988
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Nice,

I am scared to see what the 4.0 oil temp reaches
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Old Jul 11, 2011 | 04:36 PM
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Year: 1996
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Engine: 4.0 I-6 High output
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Originally Posted by Captain_America
Nice,

I am scared to see what the 4.0 oil temp reaches
Wow, I would really like to know that. What temp is it now 4.3?
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Old Jul 11, 2011 | 04:44 PM
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The return oil is 160° or less. Engine runs at a constant 195°
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Old Jul 11, 2011 | 05:09 PM
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From: Frederick, Maryland
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Originally Posted by 4.3L XJ
The return oil is 160° or less. Engine runs at a constant 195°
Very impressive!
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Old Jul 11, 2011 | 08:16 PM
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From: logansport,in
Year: 1995
Model: Grand Cherokee
Engine: 4.0
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when we raced UMP modifieds the oil temp was usually 20-30 degress hotter than the water temp. water temp was right at 180-195 all night. maybe its different in a 4.0 liter but its a thought to consider
Last edited by dirtmod0; Jul 12, 2011 at 05:48 AM.
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Old Jul 12, 2011 | 04:06 PM
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Year: 1988
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Well, my oil pressure starts at 80psi cold and gets down to about 20psi hot at idle
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Old Jul 12, 2011 | 07:32 PM
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Originally Posted by Captain_America
Well, my oil pressure starts at 80psi cold and gets down to about 20psi hot at idle
Mine is at 35psi at idle and 50psi cruising
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