AMSOIL 100% SYNTHETIC ATV/UTV TRANSMISSION & DIFFERENTIAL FLUID

Start with API GL-5

Find API GL-5 in the service chart for the exact transmission or differential you are filling. That marking names the gear-lubricant category this fluid meets. A similar viscosity or a familiar brand name does not replace the specification printed for the housing.

Honda, Yamaha, Kawasaki, Can-Am, and Suzuki applications are part of the coverage, but each manufacturer builds more than one drivetrain design. Confirm the component and model year before service, because two housings on the same machine can require different products.

Do not confuse it with powertrain fluid

AMSOIL ATV/UTV Powertrain Fluid covers Demand Drive, AGL, and wet-brake applications, and it specifically says not to use it where API GL-5 is specified. This product is the GL-5 side of that split. Keep the two jobs separate on the bench.

During a full service, drain plugs can look more alike than the fluids behind them. Label the compartments, check the chart, and refill one housing at a time. That habit keeps a GL-5 gearcase from getting Demand Drive fluid by mistake.

Protect loaded gears

Plows, winches, skid plates, roofs, doors, tools, and cargo all add weight. Rough ground and aggressive throttle add shock load. Extreme pressure and high torque can shear a standard-service oil, thin the film, and leave gears and bearings exposed.

This fluid is built with outstanding film strength to resist extreme pressure and protect heavily loaded gears and bearings in severe operating conditions. Synthetic technology gives reserve wear protection for the hard moments, not just the easy miles between chores.

The ASTM D4172 four-ball wear scar is 0.46 mm under Paragraph 3 conditions: 150°C, 1,800 rpm, a 40 kg load, and one hour. Treat the scar as a repeatable bench comparison for film strength. Fitment still comes from the API GL-5 requirement.

Keep foam out of the gear mesh

ASTM D892 foam results are zero across all three sequences. The test blows air through the oil and reports foam volume at the end of aeration and after settling. Zero means no measurable foam formed in any sequence.

Air does not carry load like a steady oil film. A foaming gear lubricant can pull bubbles into the contact zone right where the gear teeth need protection. Zero foam results help keep the film continuous while the machine is towing, hauling, or climbing.

Pick the package and service interval

Kinematic viscosity is 120.4 cSt at 40°C and 15.6 cSt at 100°C under ASTM D445, with an ASTM D2270 viscosity index of 136. Flash and fire points are 210°C (410°F) and 220°C (428°F), and the ASTM D97 pour point is -43°C (-45°F).

Choose easy-pack or bottle by access to the fill plug. AUDTPK-EA is the single quart easy-pack and AUDTPK-CA is the case of twelve. AUDTQT-EA is the single quart bottle and AUDTQT-CA is the case. The fluid is Warranty Secure and carries the AMSOIL Limited Warranty (G1363).

Pull capacity and interval from the maintenance information for your exact housing. No separate drain interval is published for this fluid, so the original equipment manufacturer's oil change recommendation stays in charge.

Verified specifications