What should the oil pressure be on a C15?
What should the oil pressure be on a C15? Discussion in ' Peterbilt Forum ' started by trs100, Feb 14, 2012 . Does anybody know what is the normal oil pressure for C15 on idle when the engine is hot or cold? I`m getting around 20-30 psi on idle with hot engine since the manual says it needs to be between 40 and 80 psi. At 1200 rpm oil pressure is around 60 psi. Thanks! What should oil pressure be on Peterbilt cat C15? Expeditor Thanks this. It has 1 007 000 miles and the oil is changed about 1000...