FRIGOR AB Series are high performance fully synthetic refrigeration compressor oils specially designed to meet the stringent requirements of most modern refrigeration and air conditioning systems from major equipment manufacturers. These oils are specifically designed for refrigeration systems using non-hydroflurocarbon refrigerants such as R-11, R-12, R-13B1, R-22, R-113, R-500, R-501, R-502, R-717 (Ammonia – NH3), etc.