Originally Posted by remotemark

I'm sick of the crappy cooling I get from the 134 in my 84 W123 300D. In the shade or on a cool morning, I can get 55-60 degree air from the vents, but when it's hot here in Charm City, I'm lucky to get mid-70s, and when 95 and the muggies hit, it doesn't seem to do much of anything. So I've decided to bite the bullet and do a proper reverse conversion to R12.

I bought some 12 oz. cans of R12 off a fellow on CL ($100 for 16 cans). I've ordered a new R4 compressor, a new condenser (mine has plenty o' bent fins -- maybe 40-50% of them), a new receiver-dryer, and a new high-low switch. Does anything else need replacing to do this right? Any of the hoses?

I've found a good radiator and a/c shop and will ask them to do the following for me: 1. get out the 134. 2. hook up the hoses to their flushing rig and flush all of the oil out of the hoses and the evaporator as many times as they can. 3. install the new components. 4. pull a vacuum to see if there are any leaks. 5. charge with oil and R12 (I have to supply it for them).

Have I covered all my bases? What is the correct R12 charge for my car?

Thanks!