Does anyone use any other kind of oil in their air tools instead of specially branded pneumatic tools oil?
I've been using ATF, usually Dextron, for well over thirty years.
I'm still using a CP 3/8" butterfly impact and an American made CP Zip Gun that I bought in the 1970's. Other than seals and socket retaining rings for the impact, all of the hard parts are original in both.
I worn out and broken a few of 1/2" drive impacts and no telling how many air ratchets, but none of the parts failures involved the air motor vanes or bearings.
Keep your air tools out of the parts washer. It's bad on the seals, and it'll kill air ratchet heads pretty quick. Ditto for air hammers.
ATF has worked for me and is dirt cheap. I'll continue to use it. I also use it in some firearms lubrication applications. Primarily muzzle loaders.
Keep your shop air drained too.
If you want to see some lubricants that you can really blow money on, look at some of the snake oil pedaled for firearms lubrication.
WoD