So, I got a new compressor in - and am about to install it. I know that if I leave the ac off it is safe to run the car like that, but I would want to have AC in there again so I am looking to charge it up. My question is if I can just get some refrigerant (& oil mix) from the store, and hook it up to the Low pressure side of the line with the compressor running - or do I have to have special tools to fill the system up (deareate it & such... ) Any input is welcome :biggthump