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Mobil Zerice S Series 

Mobil Zerice™ S Series

Refrigeration Compressor Lubricants
Mobil Zerice S Oils are premium quality synthetic refrigeration compressor lubricants based on alkyl benzenes, which due to their nature, have superior miscibility with hydrochlorofluorocarbon (R22). This allows them to be used in very low temperature applications, down to -60 °C. In certain circumstances, they can also be used in compressors where ammonia acts as the refrigerating fluid.

Relative to mineral and other synthetic lubricants, Mobil Zerice S has superior solubility with halocarbon refrigerants. This helps avoid the common problem of oil separation and congealing on the valve and heat transfer surfaces of the refrigeration system.

Additionally, Mobil Zerice S lubricants have very low pour and floc points which helps prevent harmful wax precipitation that can block expansion valves and heat transfer surfaces.

The synthetic nature of Mobil Zerice S lubricants provides excellent chemical stability which resists reaction with refrigerants, as well as high thermal stability which helps prevent oil breakdown.

FeaturesAdvantages and Potential Benefits
Miscibility with halocarbon refrigerantsIncreased system efficiency
Low pour and floc pointsAvoids wax precipitation and increased system efficiency
Chemical StabilityLong oil service life

Mobil Zerice S lubricants are recommended for all refrigeration compressor types: reciprocating or rotary screw. They are well suited for use with hydrochlorofluorocarbon refrigerants, and may also be suited for use with ammonia in certain equipment builders’ compressors. They should not be used with sulfur dioxide or R134A refrigerants. The specific viscosity grade should be selected in accordance with the compressor manufacturer's recommendations.

Mobil Zerice S324668100
Viscosity, ASTM D 445    
cSt @ 40ºC324668100
cSt @ 100ºC4.25.46.58.0
Pour Point, ºC, ASTM D 97-33-30-27-27
Flash Point, ºC, ASTM D 92154154174186
Floc Point, R12, ºC-60-60-60-60
Acid Number, mg/KOH, max., ASTM D 974.05.05.05.05
Copper Corrosion 3 h, at 100 ºC, ASTM D 1301111
Water Content, ppm, ASTM D 1533<30<30<50<30