I have a 2005 sterling with a mercedes motor lt9513 motor in it. What is the oil pressure suppose to be at on idle. I got my bottom end done about 5 years ago and mine reads at around 15-20 on idle. My Vin is N9O951. Any advice is appreciated
IIRC--most ran at speed 1600 rpm @ or around 50 psi and idled @ 25 to 30 psi.