My S10 shows about 70psi (steady) of oil pressure when warmed up and at an idle. At normal driving RPM's it pegs out over 80psi. My question is this... is anyone familiar enough with the oil passages in the 4.3L engine to know if it is possible for this reading to happen due to blockage somewhere between the pump and somewhere after the sending unit?
I bought the car used with 116,000 miles on it and it has always been this way. It does not make any odd noises so I am not really to excited about it but I am curious. The PO did some towing because it has an aftermarket transmission cooler and a heavy duty hitch with the electric brake assist connection in back. The best I can hope for I guess is that the PO had a high volume oil pump put in because he wanted to be able to tow a heavy load. Like I said, that is what I want to believe but I do not know for sure.