The procedure below is appropriate for certified HVAC technicians
range officers maintaining inventory
SAE 75W-90 viscosity
These are different from the gasoline equivalents
Cermax + engine treatment is worth considering
Permanent Ceramic Protection for Hydraulic Pumps, Cylinders, Valves & Motors gas engine The procedure below is appropriatePermanent Ceramic Protection for Hydraulic Pumps, Cylinders, Valves & Motors Cerma Ceramic Hydraulic Treatment is a one time application that permanently bonds STM 3 Nano Silicon Carbide (SiC) ceramic to the internal ferrous metal surfaces of your hydraulic system pumps, cylinders, valve spools, and motors. Used in construction equipment, agricultural tractors, industrial presses, dump trucks, forestry machines, marine steering, hydraulic tailgates,