Product Description
Mobil Delvac Xtreme Service 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 under sever working and provides good
adhesion and cohesion. An extreme-pressure additive provides exceptional
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 Service
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 Service
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 Service 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.
Features
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Advantages and Potential Benefits
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Excellent resistance to water, including spray off and wash out
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Maintains excellent lubrication properties and protects equipment in
conditions of water contamination
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Outstanding extreme-pressure and antiwear protection
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Lower maintenance costs and less unanticipated downtime
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Better stay-put properties at high temperatures
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Excellent performance in high shear, high load applications, especially where
grease re-supply is limited
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Excellent resistance to rust and corrosion
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Protects equipment in the presence of water for reduced maintenance and longer
equipment life
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Applications
- Heavy-duty trucks, especially hinge and bucket pins, U-joints, and fifth wheels
- Mining and construction equipment
- Highly loaded plain and antifriction industrial bearings
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Typical Properties

Mobil Delvac Xtreme Service Grease
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| NLGI Grade | 2 |
| Thickener Type | Lithium Complex |
| Color, visual | Orange |
| Penetration, Worked @ 25°C, mm/10, ASTM D217 | 280 |
| Dropping Point, °C, ASTM D2265 | 260 |
| Viscosity of Oil, cSt @ 40°C, ASTM D445 | 320 |
| Penetration Consistency Change, mm/10, ASTM D1831 | -4 |
| Timken OK Load, lb, ASTM D2509 | 40 (min) |
| 4-Ball Wear Test, mm, ASTM D2266 | 0.5 |
| Corrosion Prevention, ASTM D1743 | Pass |
| Copper Strip Corrosion, ASTM D4048 | 1A |
| Water Washout, 1h @ 79°C, % ASTM D1264 | 6 |
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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 Delvac are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.
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