I have on board air too. (2) two to be exact.
I have an ARB compressor just for the ARB's. and I have a chrysler minivan airconditioning compressor for tires, tools, and just for blowing air.
I did seize one compressor up last year, but that was because we were sandblasting with my jeep and I didn't oil the compressor during the sandblasting session.
What I usually do is right before the trail ride, I shoot some AIR TOOL Oil into the compressor intake and I am good for the ride.
This will include any tools we use, airing up tires mine and anyone elses.
If I run it for more than say, 20 minutes straight, I will shoot some more air tool oil in. Note, both of my bumpers serve as air tanks. Air exiting the compressor will be HOT. It blows cheep air lines. So expect to have some wear on the exit line.
The front bumper serves as an AIR cooler. this way it goes into my front bumper then down the frame to the rear bumper to cool again prior to getting used. Works quite well.
and I only spent $75 bucks for the compressor at a Junk yard.
"pick and pull"
You will need a switch and a safety blow off valve. AS they will produce over 400 psi if not regulated. "I learned this the hard way." Wow was that loud! It blew the bran new air line in about 2 seconds of operation, without the regulator.