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AMSOIL Synthetic Polymeric Off-Road Grease, NLGI #2

Synthetic Polymeric Grease for OFF ROAD open & exposed surfaces

High Adhesion/Cohesion Synthetic Polymeric Grease for Off-Road Equipment (GPOR2)

Undoubtedly the best grease of it's type on the market today! ~ 5% Moly

AMSOIL Synthetic Polymeric Off-Road Grease (GPOR2) combines an over-based calcium-sulfonate complex thickener and proprietary synthetic polymeric technology to provide outstanding performance in heavy duty off-road applications.

Package Size Includes:
15-oz. Cartridge
15-oz. Cartridges (case of 10)
15-oz. Cartridges (case of 40)
35-lb. Pail
120-lb. Keg
400-lb. Drum

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Overview & Description
AMSOIL Synthetic Polymeric Off-Road Grease (GPOR1, GPOR2) combines an over-based calcium-sulfonate complex thickener and proprietary synthetic polymeric technology to provide outstanding performance in heavy duty off-road applications.

AMSOIL developed an exclusive synthetic polymeric system custom-built to provide performance benefits specific to off-road equipment. This synthetic technology helps give AMSOIL Off-Road Grease tenacious cling ability and maximum pound-out resistance over extended service intervals, even in wet environments.

Step up to AMSOIL & enjoy performance from a name you trust!

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, The First in Synthetics®, to do the best job protecting your engine.

GPOR is AMSOIL's term for Pound Out Resistance. Take a look and see why:


Greased components in heavy equipment are subjected to serious abuse. Virtually all heavy-duty off-road equipment operates under heavy-load conditions. The extreme impact common to off-road equipment forces all of that heavy load (pressure) onto places where the equipment pivots, relying on the grease to prevent metal-to-metal contact. Lesser quality greases cannot withstand the load and are pounded out of the impact area. When pound-out occurs, heavily loaded components are left unlubricated, which can result in metal-to-metal contact and extreme amounts of wear.

AMSOIL Off-Road Grease’s exclusive synthetic polymeric technology provides exceptional adhesion (ability to cling to components) and cohesion (ability to cling to itself) properties. It is engineered to resist pound-out better than other greases in heavily-loaded, extreme-pressure applications and stay in place longer, providing outstanding lubrication over extended service intervals and reducing the detrimental effects of missed grease points.

5% Moly-Fortified to Meet CAT Requirements
AMSOIL Synthetic Polymeric Off-Road Grease is heavily fortified with moly for maximum wear protection to meet Caterpillar’s requirement for pin and bushing applications. Its high Timken OK load and excellent four-ball wear and four-ball weld test results are proof of its exceptional load-bearing capacity.

Extended Service Life, Excellent Value
AMSOIL Synthetic Polymeric Off-Road Grease provides serious severe-duty performance over extended service intervals. It resists pound-out and significantly reduces the amount of grease ejected during repetitive pounding action. Field test results show that AMSOIL Synthetic Polymeric Off-Road Grease reduces grease consumption by up to 50 percent. That allows operators to either maintain their current maintenance schedule and use up to 50 percent less grease per application, or extend the length of time between re-greasing intervals. Its superior pound-out resistance combined with extended service intervals and superior protection result in reduced lubricant, labor and equipment-replacement costs.

Excellent Water Washout Resistance
Greased components on heavy equipment are frequently exposed to water. AMSOIL Synthetic Polymeric Off-Road Grease resists water washout to maintain the external seal on greased components and help prevent water and other contaminants from entering wear-prone areas.

Calcium-Sulfonate Complex Thickener
AMSOIL Synthetic Polymeric Off-Road Grease features a calcium-sulfonate complex thickener for enhanced extreme-pressure performance. Calcium-sulfonate complex is the ideal thickener for off-road grease. Its inherent extreme-pressure benefits deliver excellent impact resistance.

Amsoil GPOR Synthetic Polymeric off road grease saves you thousands in bucket pin repairs.AMSOIL Synthetic Polymeric Off-Road Grease is ideal for heavy-duty, heavy-load-bearing applications operating in the adverse conditions found in agricultural, construction, landscaping, logging and mining environments. Applications include power shovels, drag lines, wheel and track loaders, excavators, bulldozers, skid steers, dump trucks and other heavy-duty equipment with heavily-loaded pivot pins, king pins, bucket pins and bushings.

Also a popular solution for snow plow king bolt pivot wear. An expensive and common problem easily solved with AMSOIL Polymeric Off-Road Grease.

AMSOIL Synthetic Polymeric Off-Road Grease is a perfect choice for Caterpillar equipment requiring 5 percent moly for pin and bushing applications. AMSOIL Off-Road Grease provides superior performance, protection and longevity in heavy-duty, off-road applications.

This product GPOR2CR, replaces the AMSOIL 5th Wheel Grease. While it may be not as easy to apply using the 14oz tube instead of the spray can, it does perform better, resists wear under temperature extremes, last longer and saves the operator money. To order a single tube simply ask for GPOR2CR-EA.


Typical Technical Properties

AMSOIL Synthetic Polymeric Off-Road Grease (NLGI #2)

NLGI Grade


Penetration [25°C (77°F), 0.1 mm] worked 60 strokes (ASTM D-217)


Base Oil Viscosity [40°C (104°F)], cSt (ASTM D-445)


Timken OK Load Test, lbs. (ASTM D-2509)


Four Ball Weld Point, kgf (ASTM D-2596)


Four Ball Wear Test, scar mm (ASTM D-2266)

< .45

Dropping Point, °C, (°F) (ASTM D-2265)

345 (650)

Water Washout, % (ASTM D-1264)


Ambient Operating Temperature Range, °C, (°F)
-23 to 54 (-10 to 130)
Calcium-Sulfonate Complex
Moly Content, %
Rust Test (ASTM D-1743)
Impact Resistance (AMS-POR)


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