HEY GROUP...
well I posted this question earlier about my oil gauge hunting..Well I have found out why. When driving on the interstate without the ac on the gauge holds steady just about on the next mark above the 40 mark (50psi I think) But.. when I engage the ac, the needle will rise to just about that mark and move back down to the position when not running ac.. the oil gauge needle will move back and forth (like the ac clutch is going on and off) until I turn off the ac.. then the needle will fall to just above the mark (50psi) and be steady again.. at idle or deseleration the gauge needle will fall which is normal.. Sooo.. any ideas on the problem.. I know it doesn't hurt, but it'* kinda annoying..Thanks all..

That sounds normal to me. In fact, I've seen it hunt more than that, from 60 down to 30 and back, during acceleration and deceleration. I wouldn't worry about it.

The A/C makes my oil pressure increase.

Yeah. Mine does the same thing. Been doing it since new. Now have 194,000. Not to worry.