oil pressure fluctuating.

I think the concern here is not the numbers themselves, as if he is thinking they are too low, but why there is 15 psi fluctuation at hot idle, if I read that correctly. If it's steady at cold idle and then gets the big swings at hot, I would be surprised if it was air in the line. It might just be the pump gets random strong pumps going as the engine lopes. Regardless, like the others said, the numbers aren't bad so its nothing to fret over.