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Synthetic Water Resistant Grease (GWR)

 Synthetic Water Resistant Grease NLGI#2 (GWR)
Product Code: GWR • Brand: AMSOIL

Superior Lubrication and Protection in Automotive and Industrial Applications With Extensive Exposure to Water

Package sizes include:

3-oz. Cartridges (not sold individually, comes in a pack of 3)
3-oz. Cartridges (case of 10)
14-oz. Cartridge
14-oz. Cartridges (case of 10 & 40)
35-lb. Lug
120-lb. Keg

See Pricing or Place an Order
MSDS Data Sheet

Product Details

Product Applications

AMSOIL Synthetic Water Resistant Grease meets the highest performance standards set by the National Lubrication Grease Institute (NLGI), GC for wheel bearing applications and LB for chassis applications. It may be used in automotive wheel bearings, chassis or other applications for which an NLGI No. 2 GC or LB grease is recommended. Its unique water-resistant formulation makes it ideal for use in components or equipment with frequent or prolonged water exposure.

Product Description

AMSOIL Synthetic Water Resistant Grease is an extreme-pressure grease formulated specially for wet-duty performance. Composed of premium-quality synthetic base oils and calcium sulfonate complex thickeners, Water Resistant Grease provides exceptional film strength, shear resistance, adhesion properties and mechanical stability. Its water washout and sprayoff resistance are outstanding for applications frequently exposed to water, mud, snow or ice, including ATVs, UTVs, snowmobiles and boat trailers.

Water Washout and Sprayoff Protection

AMSOIL Synthetic Water Resistant Grease gains its wet-duty performance from its superior cohesiveness and adhesiveness. It holds together when exposed to water and clings tenaciously to metal surfaces when wet. Components remain protected during prolonged exposure to standing or pressurized water.

Corrosion Protection

AMSOIL Synthetic Water Resistant Grease protects metal surfaces from corrosion, which may be worsened by frequent or prolonged water contact. It seals metal surfaces and chemically fights corrosion.

Load-Carrying and Extreme-Pressure Performance

AMSOIL Synthetic Water Resistant Grease protects components from metal-to-metal contact even under heavy loads. Its extreme-pressure additives protect against sustained or sudden extreme loads for dependable protection against wear.


AMSOIL Synthetic Water-Resistant Grease is compatible with many other types of greases. However, it is recommended that when changing greases, the equipment be cleaned of the old grease when possible or flushed with a liberal amount of Water-Resistant Grease while the mechanism is in operation. Closely monitor the system for any inconsistencies. Grease compatibility questions should be referred to your AMSOIL representative or AMSOIL INC.

AMSOIL Product Availability

AMSOIL Synthetic Water Resistant Grease is available in 3-oz. cartridges, 14-oz. cartridges, 35-lb. lugs and 120-lb. kegs.


This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL GWR.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Technical Data

Typical Technical Properties
Synthetic Water Resistant Grease (GWR) GWR NLGI GC/LB Requirements
Thickener calcium sulfonate complex NR*
NLGI consistency grade 2 NR*
NLGI performance grade GC-LB NR*
Penetration (ASTM D-217) (25°C [77°F], 0.1 mm) worked 60 strokes 277 220-340 min
Operating Range °F (°C) -40 to 350 (-40 to 177) NR*
Dropping point, °F (°C) (ASTM D-2265) >500 (>260) 428 (220) min
High temperature life, hours (ASTM D-3527) 115 80 min
Water washout, percent (ASTM D-1264) 1.25 15 max
Rust and corrosion (ASTM D-1743) pass pass
Oil separation, percent loss (ASTM D-1742) (24 hours, 25°C [77°F]) 0 6.0 max
Leakage, g lost (ASTM D-4290) 4.2 10 max
Four-ball wear test, mm scar (ASTM D-2266) 0.42 0.60 max
Fretting wear, mg (ASTM D-4170) 2.5 10 max
Four ball EP, kgf (ASTM D-2596) Weld point Load wear index   500 70   200 min 30 min
Timken OK load test, lbs (ASTM D-2509) 70 NR*
Low-temperature torque, N•m (ASTM D-4693) (-40°C [-40°F]) 6.8 15.5 max
Oil viscosity, 40°C (104°F), cSt 165 NR*
Color blue NR*
Texture smooth with tack NR*
*NR: Not required for NLGI GC-LB labeling

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 Synthetic Water Resistant Grease NLGI#2 (GWR)

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