well i have to change my condenser, and also changing the dryer, on my 70 mustang with factory ac. everything has been switched to r134, compressor, hoses and dryer, but the fitting from the condenser to the dryer came loose and damaged the threads so i ordered a new one, condenser and dryer from classic air. what im trying to find out is how much oil to put in the condenser and dryer when installing the new ones. ive heard where some people cant seem to get any oil out of the old condenser. ive read anywhere from 1 oz. to 4 oz. even if i got some out of it, it has been leaking for some time now so it wouldnt be accurate.