Oil pressure gauge
The oil pressure gauge on my 110 in reading just under 60psi which is almost max. I know there is no way I have that much oil pressure and the truck has 140k on it. I unplugged the sending unit and the gauge went back to zero(it also goes to zero when the motor is off). I am guessing it is the sending unit but at $125.00 I want to be sure before I order it.