R4 versus R12 AC
The kits for conversion contain all information for converting to R134.I must be lucky because I have converted two of my MB diesles to R134.Air temp coming off the evaporator at max. blower speed is 38 degrees F. On Is six years old the other is onlt one year old. So far I have not had to add Freon in either car. Just luck. I don't think so. Just good work. Good luck to you.
Bill Lewallen Lexington.Ky.