i know the A/C threads are beat to death right now, but ive got a real quick question. are the cans of R134a that you get at autozone and put in with the hose with a guage on it worth a damn? ive heard mixed reviews like its not too good to do this to your A/C system. i have the little hose with a gauge on it and was thinking of putting a can or part of one in my truck to make sure its full. i dont think its cooling to its full ability.

 

I believe it's the same stuff dealers put in, just in smaller canisters. Just don't overcharge.

 

not going to overcharge necessarily but just curious what would happen if i did?