Not my first gauge. The pressure is much higher with the oil cooler on. Just for the hell of it, I'll put another gauge on it to see the actual pressure. I have one I use to test water pressure. There is a oil bypass valve. Not sure about the pressure relief valve.
Steve
Just looked it up. It appears the relief valve is built in to the pump. Something to think about. Like I said, this is not my thread so I will report my findings in my own.
Steve
