What do most 4.0's run as a hot oil pressure? I seem to be about 20 or so idle and 35-40 driving? is this normal?
- posted
20 years ago
4.0 Oil pressure
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- posted
20 years ago
Yup, perfect.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT'sJeff wrote:
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- posted
20 years ago
My '94 4.0 has 61k on the clock and w/10w-30 oil runs around 25 psi at idle,
45 - 50 psi fully warmed up at around 2000 rpm. I installed a rebuilt 232 in my '76 CJ5 which now has about 5k miles on it. It's about the same at idle, maybe a bit more at 2000 rpm.
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20 years ago
Yep. As long as you have 10 psi or more per 1000 rpm, you should be fine.
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20 years ago
My brother drover his 86 Comanche 4.0 for a month without oil pressure. Said it smoked too much when he put oil in it. I drove it with no oil pressure one day when he helped me move. It didn't make any noise and drove fine.