I got there newer oil less I guess. It is all self contained no need to use water (air cooled) and did not say anything about adding or changing oil. Just to make sure drain the water from the tank.
Sounds like you made your mind up already. But I personally have a Avenge X in 25cal. I love it and plan to get the other 2 barrels to add too it. I think "bang for buck " the Avenge X is worth looking at
So you were just trying to use a regular home style compressor? I'm new to all this too, but did order a young hung (sp?) 4500psi compressor off Amazon this week. Still need to try it, but hopefully it works