AMSOIL DOMINATOR Synthetic Racing Grease
AMSOIL DOMINATOR Synthetic Racing Grease (GRG) is an NLGI #2 calcium sulfonate complex grease built on a high-viscosity-index synthetic base oil for high-speed, high-heat, and heavily loaded racing service. The grade targets stock-car wheel bearings, drag-racing axles, sprint-car CV joints, motorsport spindle assemblies, and chassis fittings on track, dirt, snow, and water-exposed equipment. The grease meets the NLGI GC-LB performance grade for wheel bearing and chassis lubrication and operates from -40 F to 350 F (-40 C to 177 C).
Extreme-pressure and anti-wear protection
Heavily loaded race wheel bearings, axles, and CV joints develop sudden shock loads and sustained contact pressure that strip film thickness from typical multipurpose greases. The DOMINATOR formula carries a Four-Ball EP Weld Point of 500 kgf in ASTM D2596 against a 200 kgf minimum, a Load Wear Index of 62 against a 30 minimum, and a Timken OK Load of 60 lbs in ASTM D2509. Boundary-film durability shows in the Four-Ball Wear scar of 0.42 mm in ASTM D2266 against a 0.6 mm maximum, the chemistry that keeps spalling and micropitting off bearing races under race loads.
High-temperature performance for sustained heat
Stock-car wheel bearings, brake-adjacent hubs, and motorsport spindle assemblies routinely run above 250 F for entire heat cycles, and trailer hubs returning from a hot track see similar temperatures. DOMINATOR Synthetic Racing Grease has a dropping point of 605 F (318 C) in ASTM D566 against a 428 F minimum, and a high-temperature wheel bearing life of 220 hours in ASTM D3527 against an 80-hour minimum. The calcium sulfonate complex thickener holds its structure rather than softening or releasing oil prematurely, which is why the grease resists purge and stays in the bearing housing through long sustained-heat cycles.
Friction reduction and mechanical stability
Race teams care about parasitic loss inside wheel bearings, CV joints, and chassis pivots because every recovered watt becomes lap time or fuel saved. The synthetic base oil and calcium sulfonate complex thickener combination delivers low rolling resistance plus exceptional mechanical stability, so the grease does not break down or lose consistency under the high shear that defines racing wheel bearings. Worked penetration in ASTM D217 falls at 265 to 295 against the 220 to 340 NLGI #2 range, holding the grade through extended shear.
Water washout, oxidation, and corrosion resistance
Off-road, dirt-track, and watercraft racing exposes bearings to standing water, mud, and pressure spray during race weekends and post-race wash-down. Water washout in ASTM D1264 at 175 F measures 0.5 percent against a 15 percent maximum, leakage in the ASTM D4290 wheel bearing test is 4.0 g against a 10 g maximum, and the grease passes the ASTM D1743 Rust and Corrosion Test. A robust oxidation inhibitor package prevents grease breakdown and surface lacquering, while the corrosion inhibitors protect bearing races and chassis components between events and through long off-season storage.
Cold-temperature pumpability
Cold mornings at the track, snow-cross start lines, and outdoor storage still demand that grease move freely through fittings and packed bearings. Low-temperature torque in ASTM D4693 measures 2.5 N m at -40 F against a 15.5 N m maximum, supporting cold-weather service without drag or channeling. Oil separation in ASTM D1742 is 0.2 percent against a 6 percent maximum, so the formula stays homogeneous in storage and in cold housings.
Recommended applications and service intervals
DOMINATOR Synthetic Racing Grease fits any application where an NLGI #2 GC-LB grease is recommended and high-speed, high-heat, or heavily loaded conditions are present. Typical applications include stock-car wheel bearings, drag-racing axles and pinion fittings, sprint-car and modified CV joints, motorsport spindle and steering pivots, chassis lube points on race cars, closed-course snowmobile suspension fittings, watercraft drivelines, and trailer wheel bearings on race haulers. Re-grease intervals are governed by the equipment manufacturer and racing duty cycle.
- Wipe grease fittings clean before injecting fresh grease to prevent contaminant ingestion at race wheel bearings, CV joints, and chassis points.
- Maintain bearing housings one-third to one-half full of grease and avoid over-greasing, since excessive packing causes heat buildup that shortens bearing life under race loads.
- Supplement standard greasing on a maintenance schedule by cleaning and repacking housings with fresh grease, particularly after off-road, dirt-track, or water exposure.
- Outside the United States and Canada, follow the equipment manufacturer's recommended grease specification and re-grease interval.
The grease is compatible with many other types of grease. When changing greases, clean the old grease from the housing where possible, or flush the system with a liberal amount of fresh DOMINATOR Synthetic Racing Grease while the mechanism is in operation, then monitor for any inconsistencies. Aftermarket grease additives are not recommended.
Typical technical properties
| Property | Value |
|---|
| Thickener | Calcium Sulfonate Complex |
| NLGI Consistency Grade | 2 |
| NLGI Performance Grade | GC-LB |
| Operating Range, F (C) | -40 to 350 (-40 to 177) |
| Penetration (ASTM D217), worked 60 strokes, 0.1 mm | 265 to 295 |
| Dropping Point, F (C) (ASTM D566) | 605 (318) |
| High-Temperature Life, hours (ASTM D3527) | 220 |
| Water Washout at 175 F, percent (ASTM D1264) | 0.5 |
| Rust and Corrosion (ASTM D1743) | Pass |
| Oil Separation, percent (ASTM D1742) | 0.2 |
| Leakage, g lost (ASTM D4290) | 4.0 |
| Four-Ball Wear Test, mm scar (ASTM D2266) | 0.42 |
| Four-Ball EP Weld Point, kgf (ASTM D2596) | 500 |
| Load Wear Index (ASTM D2596) | 62 |
| Timken OK Load Test, lbs (ASTM D2509) | 60 |
| Low-Temperature Torque at -40 F, N m (ASTM D4693) | 2.5 |
Order AMSOIL DOMINATOR Synthetic Racing Grease
DOMINATOR Synthetic Racing Grease is available in a single 14 oz. cartridge , a case of ten 14 oz. cartridges , and a pack of forty 14 oz. cartridges . Using AMSOIL synthetic lubricants does not void a new vehicle or equipment manufacturer warranty, and the product is backed by the AMSOIL Limited Warranty. Match the right lubricant to a race car, hauler, or powersports application with the AMSOIL Vehicle Lookup Guide, compare grease grades and racing-duty options in the AMSOIL Grease Guide, then order AMSOIL DOMINATOR Synthetic Racing Grease.
Customer reviews
Best Grease out there.
Only the best for our race utv and daily drivers.
By William from Yerington, Nv on March 08, 2026.
Would recommend this to a friend.
Best grease
Best grease on the market. When it comes to grease, this is the only way to go.
By Daniel from Central PA on October 17, 2025.
Would recommend this to a friend.
Superior product
Excellent grease for many applications
By Chris from New Boston Illinois on October 06, 2025.
Would recommend this to a friend.
Read all 16 reviews
Frequently asked questions
What is AMSOIL DOMINATOR Synthetic Racing Grease used for?
The grease is built for high-speed, high-heat, and heavily loaded service. Common applications include stock-car wheel bearings, drag-racing axles, sprint-car CV joints, motorsport spindle and steering knuckle pivots, chassis lube points on race cars, closed-course snowmobile suspension fittings, and trailer wheel bearings on race haulers.
What NLGI grade is DOMINATOR Racing Grease?
It is an NLGI #2 grease with the NLGI GC-LB performance grade for wheel bearing and chassis lubrication. NLGI #2 is the standard consistency for most wheel bearing, CV joint, and chassis applications, including the high-speed and high-load fittings found on race vehicles.
What is the dropping point and high-temperature life of DOMINATOR Racing Grease?
The dropping point is 605 F (318 C) in ASTM D566 against a 428 F minimum, and high-temperature life in the ASTM D3527 wheel bearing test is 220 hours against an 80-hour minimum. The operating range runs from -40 F to 350 F, supporting sustained 250 F-plus wheel bearing temperatures common in stock-car and road-course service.
What is the Four-Ball EP Weld Point and Timken OK Load for DOMINATOR Racing Grease?
Four-Ball EP Weld Point in ASTM D2596 is 500 kgf against a 200 kgf minimum, with a Load Wear Index of 62 against a 30 minimum. Timken OK Load in ASTM D2509 is 60 lbs, and Four-Ball Wear scar in ASTM D2266 is 0.42 mm against a 0.6 mm maximum.
How does DOMINATOR Racing Grease perform in water washout?
Water washout in ASTM D1264 at 175 F measures 0.5 percent against a 15 percent maximum, leakage in the ASTM D4290 wheel bearing test is 4.0 g against a 10 g maximum, and the grease passes ASTM D1743 Rust and Corrosion. The cohesion and adhesion of the calcium sulfonate complex thickener keeps the grease in place during dirt-track and water-exposed racing service.
Is DOMINATOR Racing Grease compatible with other greases already in the bearing?
It is compatible with many other types of grease. When changing greases, clean the old grease from the housing when possible, or flush the system with a liberal amount of fresh DOMINATOR Synthetic Racing Grease while the mechanism is in operation, then monitor the system for any inconsistencies. For specific compatibility questions, contact AMSOIL Technical Services.
Does using AMSOIL grease void a new vehicle or equipment warranty?
No. Using AMSOIL synthetic lubricants does not void a new vehicle or equipment manufacturer warranty, and DOMINATOR Synthetic Racing Grease is covered by the AMSOIL Limited Warranty.
