AMSOIL Synthetic Fifth Wheel & Open Gear Compound (GFW)

AMSOIL Synthetic Fifth Wheel & Open Gear Compound (GFW)

Stays in place and protects over a broad temperature range without flaking in low temperatures or softening in high temperatures. Excellent for fifth wheel applications, with a convenient aerosol spray application that creates less mess. Designed to resist water washout. Can also be used in open gear applications.

AMSOIL Synthetic Fifth Wheel and Open Gear Compound (GFW) is based on proprietary technology resulting in a lubricant that does not use asphaltic materials, residual compounded oils or diluent solvents as part of the lubricant formulation.* Typical gear compounds are composed of asphaltic and residual oils cut with solvent to ease application and use. Synthetic GFW does not require solvents to assist the product in application and use, even in cold weather.
*Aerosol spray contains a solvent that evaporates quickly leaving a solvent-free film of material on treated surfaces.

Wide Operating Temperature Range

AMSOIL GFW performs well in cold temperatures and won't drip off at high temperatures, reducing the need for frequent rlubrication.

Adhesion to Metal

AMSOIL GFW provides excellent adhesion to metal surfaces in cold and hot temperatures. Tackiness allows it to stay in place in high-speed applications, even when applied to open gears or chains. Spray formulation offers quick and easy application.

Resists Water Washout

AMSOIL GFW repels water, protects metal parts from rust corrosion and stays in place to protect gears from wear.

Handles Heavy Loads

AMSOIL GFW provides a tough grease film to handle heavy loads and prevent metal parts from contacting.

Performance Features

  • Excellent resistance to water washout
  • Environmentally preferable to solvent-containing formulations
  • Protects ferrous surfaces from rust
  • Excellent adhesion to metal surfaces
  • Forms a tacky, tenacious film
  • Heavy load-carrying and extreme-pressure performance
  • Stays pliable at cold temperatures and does not flake off


AMSOIL GFW may be applied to fifth-wheels, open gears, chains, flexible couplings, sliding surfaces of drag lines and shovels, construction equipment, dredging equipment or any application where a heavy, tenacious lubricant is required.

Performance Data

AMSOIL Synthetic 5th Wheel and Open Gear Compound meets the AGMA 14R and NLGI #1 performance specifications.


AMSOIL Synthetic 5th Wheel and Open Gear Compound is fully compatible with other fifth-wheel and open gear compounds and may be applied to surfaces previously treated with other fifth-wheel and open gear compounds.

Product Availability

AMSOIL Synthetic 5th Wheel and Open Gear Compound is available in 11.5 oz. aerosol spray cans.

Typical Technical Properties
AMSOIL Synthetic Fifth Wheel and Open Gear Compound (GFW)
Thickener Silica
NLGI Consistency Grade 1
Penetration (ASTM D-217) Unworked 25°C 295
Dropping Point (ASTM D-566) °F 500+
AGMA Grade 14R
Rust Protection (ASTM D-1743) Pass
Oil Viscosity, 100° C, cSt 625
Water Washout (ASTM D-1264) 80°C, % loss <10
Odor bland
Texture adhesive/tacky
Color White

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