I have a Detroit and my oil pressure has been low it used to be around 40 psi at 1300-1400 rpm (60 mph)
now it is around 30-32...If I drop a gear and get the rpm to 1600-1700 i might get to about 38 psi
This started in the winter when temps got really low I let the truck idle for 3 days, so I thought maybe I had fuel in the oil but have had an oil change since then and still getting the low levels
Psi is at about 45 when first started
Series 60 oil pressure
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Clasix1055, Jun 27, 2019.
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Going out on a limb here. How often do you change your oil ??
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15k-18k....I have 8k since last service
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How’s the oil temperature? Is it running hot? If so, maybe oil cooler is plugged up, not cooling. Oil should run a little cooler, maybe 20 degrees than coolant.
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