Benz Lover

I guess I still have the R22 ?? Is that proper terminology? Someone told me to get a retrofit kit...WTF is that and is tha a DIY project or do I need to dish out more cash??

MTI

Due to environmental concerns (damage to the ozone layer) R-12 refridgerant is no longer used, It is replaced with R-134a. R-12 is still available, it's pretty expensive, and requires a license to buy it, although getting the license isn't that hard. To switch over, you'll need a new O-ring set and a new reciever/drier for the R-134a and the tools, including pressure gauge, to refill.

aqua190

i just went through this. 134 didn't cool nearly as well as the r-12 in my 91 190 2.6. i took it back to r-12, now blows 45deg. if you can find a custom a/c shop (one that does rv's, collectible cars and the like) they can probably leak test the system, repair it, and refill it with r-12. i pd $70 per lb of r-12 at the a/c shop and i think it was worth it. the system only holds 2.2 lbs.

you can get a receiver-drier on ebay for @ $20.00. you'll need that regardless of what refrigerant you go to.

also make sure your condensor and radiator are clean. i took the upper tie bar off and pushed the rad back and couldn't believe the gunk in between the condensor and radiator. i used some compressed air to blow it all out.

BRU67

I did this with my old '87 Formula 350 years ago and the pricey r-12 all leaked out within a week. $$$$$ down the drain. I recommend a Very good mechanic to make the repairs. Leaks in A/C systems can be tricky.