I finally got around to installing the Kilby on board air install I purchased a few years back. Although it took quite a bit of ingenuity to get it all to fit right I am really happy with how it turned out. I've used it quite a few times now for airing up tires, running lockers, and plan on an air horn soon. I love the speed and simplicity. It's my first OBA so I don't have any comparisons. It ran through it's initial charge of PAG oil pretty quick but I think the 30 weight motor oil will last longer. I'm enclosing a few pictures in case anyone is interested in installing one.