Permanent Ceramic Protection for A/C & Refrigeration Compressors agriculture Formulated to meet API CK-4

Formulated to meet API CK-4 specifications

My owner's manual specifies 5W-20 or 5W-30 — can I substitute Cermax 0W-20

benefit continues forever

Required for most Harley-Davidson engines

Permanent Ceramic Protection for A/C & Refrigeration Compressors agriculture Formulated to meet API CK-4Permanent Ceramic Protection for A C & Refrigeration Compressors Cerma Blue Ice A C & Refrigeration Ceramic Treatment is a one time application that permanently bonds STM 3 Nano Silicon Carbide (SiC) ceramic to the internal metal surfaces of any A C or refrigeration compressor. Works on automotive A C, residential HVAC, commercial rooftop units, walk in refrigeration, industrial chillers, data center cooling, and marine A C. Compatible with every