Been using ATF in my CO2 guns for years. I bought a quart of type F years ago. I put some in a small dropper bottle and put a single tiny drop on the end of each new 12g cart. Don't really know if it helps or hurts, but since I've been doing it, I've never had a seal failure in any of my CO2 guns. It does, however, have a distinctive aroma.
Given that it is petroleum-based, I would shy away from using it as a pellet lubricant in a spring piston powerplant. In fact, I would shy away from ANY pellet lubricant in a springer. Just my opinion.
Wow the Crosman pellgunoil seems really expensive compared to a quart of automatic transmission fluid for what they cost for what little you get. A quart of it must last a very long time!
I am wondering if it matters at all between the different types of ATF...
HA
When I worked at Daisy and Brass Eagle (Late 1990's), we used Generic (Walmart) Type F ATF for assembly of all SSPs, MSPs and CO2 guns. Most people don't know that most guns we got back as returns still held air (CO2 guns especially held charge for many months) stored in Returns truck trailers which were chilled to below freezing temperatures Winter and broiled at over 140 degrees in Summer.
I have been using ATF (the cheapest I can find) for years and it works well, as near as I can tell. I use it on pumper airguns, the the pivot point of my springers, powder-burners, bike chain, door hinges...you name it. I also use Secret Sauce, 30 weight non-detergent oil, and have used Pellgunoil in the past, but I can’t say any one is better than the other. BTW, many people use Pellgunoil long term without problems, and it’s recommended by manufacturers and some top airgun people.
When you get past the marketing, most decent lube works just fine.
