I hear you. The plan was to crank the motor without starting it and just crank the nut with a rag around it. After reading your replies, it sounds like air in the line will not affect the pressure gauge. In fact, it sounds like it is good to have air in the line. Not having the
oil come all the way to the gauge.
We will set up a pressure gauge at the block. This sounds much easier and less messy.
Thanks again.