actually air pressure ???
Yes. Many times the air is not bled out of the lines to techncally the gage is reading the preassure of the air. Of course ThAT pressure is from teh oil pressure so in most cases no one worries about it. It can be a good thing in that it dampens pressure oscillations avoiding wear on needle movement.
The FIRST thing I would do is put a gage on that engine that I can trust to be correct and check that installled gage is telling the truth.
Dan Bentler
