It can vary depending on the size and model of the semi truck, but typically a semi truck oil change requires around 10-15 gallons of oil.
You need 10psi for every 1000 rpms That’s perfectly fine oil pressure
40 - 80 psi at idle, depending on what the engine is.
There really isn't a set answer for this.. the oil light comes on when there's inadequate oil pressure in the system. A cold engine will have higher oil pressure until it warms up and the oil gets thinner as it heats.
Oil level and oil pressure are different. You don't need to have full oil to get normal pressure.
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I have a 1974 Chevy truck with the 350 V8 and the engine is in good shape. At idle the oil pressure is 35-40 PSI, at driving speed it goes up to about 50 PSI. Hope this helps.
Your car or truck will begin losing pressure(meaning you will not be able to drive forward in a normal speed)
Cracked injector cups.
11 gallons, give or take.
That light notifies you that one of the gauges is out of its normal parameter. Check the temp (overheating), the voltage (not charging) and the oil pressure gauge (low or no oil pressure).
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