I have a 1993 Rockwood class a motor home and would like to know if anyone knows how many pounds of freon this system holds, and if it is R134a, or R12.The chassie is a F350 Ford
Thanks
Dan

The ac system may not be a ford installed system. R12 fittings have a small high side and a larger low side fitting with threads on the outside. 134-a fittings are quick coupler design with no external threads. It appeared a standard 1993 f350 pickup holds about 3.25 lb r12 with 7oz 500 viscosity paraffin oil. You may find a decal on the firewall or evap. case.