Mine goes off the scale when cold (rebuilt engine) over 1,500 revs until the water has reached 75 - 80 degrees for a while when it starts dropping back to normal. Running on Valvoline 20/50 synthetic.
On another (subject hijacking but related) note I was replacing dash board lights, which is a notoriously fiddly job, and couldn't get to the oil pressure guage bulb. I undid the two screws but, with the pipe attached, it hardly moved so I refitted it.
My problem is that it now reads 20 psi. If I move the pipe the pressure changes but returns to 20. Is there any simple way to get it back to zero?
|