hey guyz now that my saturn past on inspections thanks to everybody that help me........................my next problem is 2 months ago my alternator died.. .... so my man took the compressor out..... dont ask why.... ha ha ha...... anyway we went to advance auto to get it check the guy said sir we dont test compressor....... funny huh... anyway we got that right wwe put new altenator. ... put back the compressor.... the problem is all my FREON was gone.... hate to spend to much money in the shop 2 charge.. we wanna charge it our self .. we dont know where. there is 2 tubes one on top and one under it both of them has black tops....... whwwhere do i charge it and what kind do i need how how many can .. there is a freon with oil in it alredy someone told me i neeed oil too . what do i get in what part of tubes do i charge it..... vita