Mobil Zerice S Series  

Mobil Industrial, Finland

Refrigeration Compressor Lubricants

Product Description

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.


Features, Advantages and Benefits

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.


Typical Properties

Mobil Zerice S324668100
Viscosity, ASTM D 445    
cSt @ 40ºC324668100
cSt @ 100ºC4.
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.
Copper Corrosion 3 h, at 100ºC, ASTM D 1301111
Water Content, ppm, ASTM D 1533‹30‹30‹50‹30


Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

The Mobil logotype, the Pegasus design, and Zerice are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.


ExxonMobil Finland Oy Ab
PL 91 (Keilasatama 5)
02151 Espoo - FINLAND

+358 (0) 10 40 8500

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification.  Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations.  The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit 
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.