Originally Posted by Moparteacher

The oil, whether it be mineral, PAG or Ester, does not circulate with the refrigerant in an RV2/R-12 system like a rotary/134a compressor system, regardless of the refrigerant you choose to use.

Any of the three oils should work on the RV2 as long as you add it to the crankcase of the compressor and NOT the charging port. THE OIL DOES NOT MIX AND CIRCULATE WITH THE REFRIGERANT with an RV2 or York/Tecumseh..


I'm by no no means an AC system expert, but according to the service manual in an RV2/R12 system the oil does mix with and is carried by the R12 through the entire system.

1968 Charger R/T, 440 Auto, GG1;
1969 Super Bee, 383, 4-speed, T5;
1969.5 Road Runner, 440-6, 4-speed, 96;
1970 Duster 340, 4-speed, EV2;
1970 Charger R/T SE, 440 (496), Auto, EB3;
1970 Dart Swinger 340 (416), 4-speed, EV2;
1970 Corvette coupe, LS5, 4-speed, Daytona yellow;
2000 Corvette coupe, LS1, 6-speed, Twin Turbo, Torch red.