I know the ins and outs of using York/York style EDC. I have a different a/c compressor that works real well that I wanna try. What precautions do I need to take to use it? I know you gotta keep oil in it, do you just use a/c oil? Will the oil have any negative effects on the valves? I don't have and can't afford a York right now. i'll eventually switch but for now i'd like to make this one work if I can. Any info would help. Thanx.