LubC, Fridge S are high performance full synthetic refrigeration compressor oils, formulated by Ploy Alpha Olefin (PAO) base stocks, and advanced additive system, meeting the stringent requirements of major refrigeration compressor manufacturers and the performance requirements of DIN 51503 KAA. These oil series are suitable for ammonia (R 717 , NH 3 ) refrigeration systems, where evaporator temperatures are greater than 45 ˚ C, and manufacturing industries that require very low temperature control such as pharmaceuticals and large commercial operation such as cold stores, marine systems and food processing plants .