Mobil Delvac™ Xtreme Grease  

Mobil Commercial Vehicle Lube, Canada


Product Description

Mobil Delvac™ Xtreme Grease is an extra high performance extreme-pressure grease. It is an NLGI 2 grade and is manufactured with a proprietary, high-temperature lithium complex thickener system. It exhibits excellent resistance to softening and provides good adhesion and cohesion. An extreme-pressure additive provides excellent protection against wear and shock loads, while additional additives enhance resistance to high-temperature oxidation and protection against rust. Other formulation features provide very good resistance to water wash, and long service in bearings operating at high temperatures. This heavy-duty, severe-service grease has outstanding structural stability and chemical stability, will not corrode steel or copper bearing alloys, and is compatible with conventional seal materials.

Mobil Delvac Xtreme Grease is recommended for use in heavy-duty trucks, especially hinge and bucket pins, U-joints, and fifth wheels. It is also recommended for construction and mining sector applications, particularly for the lubrication of plain and antifriction bearings in contractor and mining vehicles working under severe operating and weather conditions. Mobil Delvac Xtreme Grease is also recommended for use in heavily loaded industrial bearings. The recommended application temperature range is -20°C to +175°C.


Features and Benefits

Mobil Delvac Xtreme Grease is designed by our formulation technologists specifically to meet the needs of customers with heavily loaded equipment that requires high extreme-pressure/antiwear performance and stay-in-place performance even in tough conditions where water wash, high sliding, and high temperature conditions are present.

FeaturesAdvantages and Potential Benefits
Excellent resistance to water, including spray off and wash outMaintains excellent lubrication properties and protects equipment in conditions of water contamination
Outstanding extreme-pressure and antiwear protectionLower maintenance costs and less unanticipated downtime
Better stay-put properties at high temperaturesExcellent performance in high shear, high load applications, especially where grease re-supply is limited
Excellent resistance to rust and corrosionProtects equipment in the presence of water for reduced maintenance and longer equipment life



Recommended by Imperial Oil for use in:

  • Heavy-duty trucks, especially hinge and bucket pins, U-joints, and fifth wheels
  • Mining and construction equipment
  • Highly loaded plain and antifriction industrial bearings


Typical Properties

Mobil Delvac Xtreme Grease 
NLGI Grade2
Thickener TypeLithium Complex
Color, visualOrange
Penetration, Worked @ 25°C, mm/10, ASTM D217280
Dropping Point, °C, ASTM D2265260
Viscosity of Oil, cSt @ 40°C, ASTM D445320
Penetration Consistency Change, mm/10, ASTM D1831-4
Timken OK Load, lb, ASTM D250940 (min)
4-Ball Wear Test, mm, ASTM D22660.5
Corrosion Prevention, ASTM D1743Pass
Copper Strip Corrosion, ASTM D40481A
Water Washout, 1h @ 79°C, % ASTM D12646


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.

All trademarks used herein are trademarks of Exxon Mobil Corporation or one of its subsidiaries.


Imperial Oil

Petroleum and Chemicals Division
Lubricants and Specialties
240 Fourth Ave SW
C. P. 2480, Station M
Calgary AB T2P 3 M 9


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.