Question about 2001 Isuzu Trooper
I just purchased a 2001 isuzs trooper. Not sure what the oil pressure is suppost to be. When I first start it and run it while it is cold the pressure is at 85 psi. After it warms up it drops to about 50 psi when driving and about 10psi at stops. Is this normal?
I'd check to see what is in the crankcase currently; with modern multirange oils, that sounds high.
The typical operating range is from 30-60#; 10 seems low for an idle pressure but then idiot lights are supposed to trigger at ~ 4# pressure.
If it was mine, I would change oil and put a multirange type suitable for your area in it to see what influence it has. If you are in a temperate climate as I am, it might be time to change from summer to a winter range; 10W30 is good for us and 10W40 in summer (WV).
Posted on Oct 13, 2008
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Posted on Jan 02, 2017
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