AMSOIL DOMINATOR® 100% SYNTHETIC RACING GREASE

AMSOIL DOMINATOR® 100% SYNTHETIC RACING GREASE

Product Code Package Size Unit of Measure
GRGCR-EA 14 oz. Cartridge Each
GRGCR-CA 14 oz. Cartridge Case of 10
GRGCR-PK 14 oz. Cartridge Packs of 40
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AMSOIL DOMINATOR Synthetic Racing Grease delivers extreme-pressure bearing protection for high-speed, high-heat racing applications across dirt, snow, water, and track. Built on a calcium sulfonate complex thickener paired with a high-viscosity-index synthetic base oil, it handles the punishing conditions that destroy conventional greases.

Racing puts bearings through conditions that no street application can replicate. Wheel bearings in a sprint car running 7,000+ RPM on a dirt oval, trailer hubs on a drag car towed across the country, driveline components in a snowmobile running flat-out on hard-packed snow. These environments combine extreme speed, heavy loading, high temperatures, and exposure to water, dirt, and debris. A standard multi-purpose grease simply was not engineered for this kind of abuse.

EXTREME-PRESSURE WEAR PROTECTION FOR HIGH-SPEED BEARINGS
DOMINATOR Synthetic Racing Grease is loaded with extreme-pressure additives that protect heavily loaded bearings when speeds and temperatures spike. In ASTM D2596 Four-Ball EP testing, it achieved a weld point of 500 kgf and a load wear index of 62, more than double the minimum NLGI GC-LB requirements of 200 kgf and 30, respectively. The Four-Ball Wear Test (ASTM D2266) produced a wear scar of just 0.42 mm against a 0.6 mm maximum. For race car wheel bearings, throwout bearings, or driveline components under sustained heavy loads, that level of protection translates directly to longer component life between rebuilds.

SUPERIOR FRICTION REDUCTION FOR MAXIMUM POWER THROUGHPUT
Every bit of parasitic drag through a bearing is power that never reaches the ground. DOMINATOR Racing Grease is formulated specifically to minimize friction in high-speed bearing applications, helping maximize power throughput. Less friction also means lower operating temperatures, which extends both grease life and bearing life. For circle track, drag, off-road, or snowmobile racing, reduced bearing drag is a measurable competitive advantage.

HIGH-TEMPERATURE STABILITY THAT OUTLASTS CONVENTIONAL GREASE
The calcium sulfonate complex thickener in DOMINATOR Racing Grease provides a dropping point of 318°C (605°F) per ASTM D566 testing, far exceeding the NLGI GC-LB minimum of 220°C (428°F). In ASTM D3527 high-temperature life testing, it lasted 220 hours compared to the 80-hour minimum requirement. This means the grease stays in place and maintains its structure under sustained high-heat conditions where lithium-based greases would break down and flow out of the bearing housing.

LOW-TEMPERATURE PUMPABILITY DOWN TO -40°F
Racing does not always mean hot. Snowmobile racing, early-morning staging, cold-weather towing to the track. DOMINATOR Racing Grease has an operating range of -40°C to 177°C (-40°F to 350°F). Low-temperature torque testing per ASTM D4693 at -40°F produced a result of just 2.5, well under the 15.5 maximum. The grease flows and lubricates immediately at startup in freezing conditions instead of sitting stiff in the housing while bearings run unprotected.

RESISTS WATER WASHOUT AND CORROSION
Mud, puddles, pressure washing, rain. Racing equipment gets wet constantly. DOMINATOR Racing Grease lost only 0.5% in ASTM D1264 water washout testing at 79°C (175°F), compared to the 15% maximum allowed by NLGI GC-LB standards. Oil separation (ASTM D1742) was just 0.2% against a 6% maximum, meaning the grease stays intact and does not bleed oil over time. It also passes ASTM D1743 rust and corrosion testing, protecting steel and iron bearing surfaces even in wet, corrosive environments.

SPECIFICATIONS AND COMPATIBILITY
DOMINATOR Synthetic Racing Grease carries an NLGI Grade 2 consistency rating and meets NLGI GC-LB performance standards. It is suitable for high-speed and high-temperature wheel bearing applications (GC) as well as chassis lubrication duties (LB). It is compatible with many other grease types, though AMSOIL recommends cleaning old grease from the housing when switching products, or flushing with a liberal amount of DOMINATOR Racing Grease while the mechanism is in operation.

APPLICATION GUIDANCE
Maintain bearing housings one-third to one-half full of grease. Over-greasing causes excessive heat buildup that works against you. Wipe fittings clean before injecting grease to prevent pushing contaminants into the bearing. Periodically clean and repack housings with fresh grease on an established maintenance schedule. Available in 14 oz. cartridges.

Property DOMINATOR Synthetic Racing Grease NLGI GC-LB Requirement
Thickener Calcium Sulfonate Complex NR
NLGI Consistency Grade 2 NR
NLGI Performance Grade GC-LB NR
Operating Range, °C (°F) -40 to 177 (-40 to 350) NR
Penetration, Worked 60 Strokes (ASTM D217) 265-295 220-340 range
Dropping Point, °C (°F) (ASTM D566) 318 (605) 220 (428) min
High-Temperature Life, hours (ASTM D3527) 220 80 min
Water Washout, % loss at 79°C (ASTM D1264) 0.5 15 max
Rust and Corrosion (ASTM D1743) Pass Pass
Oil Separation (ASTM D1742) 0.2 6 max
Leakage, g (ASTM D4290) 4.0 10 max
Four-Ball Wear Test, mm scar (ASTM D2266) 0.42 0.6 max
Four-Ball EP Weld Point, kgf (ASTM D2596) 500 200 min
Four-Ball EP Load Wear Index (ASTM D2596) 62 30 min
Timken OK Load Test, lbs (ASTM D2509) 60 NR
Low-Temperature Torque at -40°F (ASTM D4693) 2.5 15.5 max

FAQs

What vehicles and equipment is AMSOIL DOMINATOR Synthetic Racing Grease designed for?

AMSOIL DOMINATOR Synthetic Racing Grease (GRGCR) is engineered for high-speed, high-heat, and heavily loaded bearings across a wide range of applications. It covers auto/light truck, motorcycle, ATV, UTV, snowmobile, marine outboard, PWC, heavy-duty on-road, heavy-duty off-road, agriculture, and powersports equipment. Verified users report applying it to dirt bike bearings, snowmobile components, semi truck throw-out bearings, and wheel bearing packing.

How does AMSOIL DOMINATOR Racing Grease reduce friction and improve performance?

AMSOIL DOMINATOR Synthetic Racing Grease is formulated with superior friction-reducing properties that not only inhibit wear but also maximize power throughput and fuel efficiency. By effectively reducing friction in high-speed racing bearings, it helps ensure race vehicles operate at peak performance. Its extreme-pressure additive package delivers excellent wear protection in heavily loaded, high-speed applications, helping extend component life.

What type of thickener does AMSOIL DOMINATOR Synthetic Racing Grease use and why does it matter?

AMSOIL DOMINATOR Racing Grease uses a top-quality calcium sulfonate thickener paired with a high-viscosity-index synthetic base oil. Calcium sulfonate thickeners are known for exceptional mechanical stability, a high dropping point, high load-carrying performance, reduced wear, and excellent resistance to water washout and corrosion. This combination delivers dependable protection across all temperatures, from excellent low-temperature pumpability to high-temperature consistency.

How does AMSOIL DOMINATOR Racing Grease compare to conventional greases for high-speed bearings?

Unlike conventional greases, AMSOIL DOMINATOR Synthetic Racing Grease is specifically formulated for high-temperature, high-speed racing applications while also delivering the exceptional load-bearing capacity of a heavy-duty grease for low-speed bearings. Its synthetic base oil and calcium sulfonate thickener provide superior mechanical stability, water washout resistance, and corrosion protection that conventional greases typically cannot match. Verified buyers consistently rate it 5 stars and describe it as the best grease on the market for demanding applications.

How much AMSOIL DOMINATOR Racing Grease should I use and how do I maintain proper greasing?

AMSOIL recommends maintaining bearing housings one-third to one-half full of DOMINATOR Racing Grease — do not over-grease, as excessive heat buildup can result. Before injecting grease, wipe grease fittings clean to prevent contaminant ingestion. Supplement standard grease maintenance by periodically cleaning and packing housings with fresh grease on an established maintenance schedule. The product is available in 14-oz. cartridges for standard grease guns.

Is AMSOIL DOMINATOR Synthetic Racing Grease compatible with other greases already in my equipment?

AMSOIL DOMINATOR Synthetic Racing Grease is compatible with many other types of greases. However, AMSOIL recommends that when changing greases, you clean the equipment of old grease when possible or flush with a liberal amount of DOMINATOR Racing Grease while the mechanism is in operation. After switching, closely monitor the system for any inconsistencies. For specific grease compatibility questions, AMSOIL advises contacting your AMSOIL representative or AMSOIL INC. directly.

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