Engineered to maximize CVT performance and efficiency while protecting against wear during heavily loaded, high-temperature operation, so you can confidently and safely push your machine to its limit.
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Product data sheets
View, download, or save a copy of the Product Data Sheet or Safety Data Sheet for AMSOIL 100% SYNTHETIC ATV/UTV CONTINUOUSLY VARIABLE TRANSMISSION FLUID.
AMSOIL 100% Synthetic ATV/UTV Continuously Variable Transmission Fluid (AUCVT) is a dedicated synthetic CVT fluid for Polaris STEELDRIVE CVT transmissions, formulated to keep the belt in firm contact with the variable diameter pulleys while protecting heavily loaded gearing against wear during high-temperature, high-torque operation. The fluid carries a 7.4 cSt high-temperature viscosity, a viscosity index of 182, and a -46 C pour point so the same charge holds film strength under load and still moves at sub-zero startup.
Friction durability that holds the belt to the pulleys
A continuously variable transmission relies on a belt running between two variable diameter pulleys to create an unlimited range of gear ratios. If the belt slips, ratio control is lost and shudder, glazing, and accelerated belt wear follow. Synthetic ATV/UTV CVT Fluid is engineered with exceptional friction properties that reduce shudder, keep the belt in consistent contact with the pulleys, and support smooth ratio changes through the full load and throttle range.
The friction profile is the entire point of a CVT-specific fluid. Using a generic ATF, gear oil, or universal hydraulic fluid changes the coefficient of friction at the belt-pulley contact, and the result is slip, heat, and a shortened belt service life.
Severe-service wear protection under heavy loads
Extreme pressure and high torque generated during severe-service operation can mechanically shear lubricants, causing them to lose viscosity and leaving components exposed. Stress on the transmission is amplified by the additional weight of passengers, accessories, and cargo, especially when combined with aggressive driving through tough terrain. AUCVT delivers high film strength and a Four-Ball Wear scar of 0.43 mm under the ASTM D4172 Para 1 test (75 C, 1200 rpm, 40 kg, 1 hr), giving heavily loaded, high-torque CVTs a measurable margin against scuffing and sliding wear.
Extreme-temperature performance from sub-zero startup to full load
Lubricants break down faster under extreme heat, which can leave deposits that accelerate wear and degrade frictional behavior. Synthetic ATV/UTV CVT Fluid resists thermal stress with a flash point of 220 C (428 F), a fire point of 236 C (457 F), and a viscosity index of 182, helping cool transmission components and extend fluid life regardless of how hard the machine is pushed.
Cold-weather performance matters just as much for utility and recreational riding. The fluid carries a pour point of -46 C (-51 F) and a Brookfield viscosity of 9150 cP at -40 C, so it flows quickly to wear surfaces during sub-zero startup and remains efficient inside the gearbox before the engine has reached operating temperature.
Engineered as a Polaris STEELDRIVE OEM-fluid alternative
Synthetic ATV/UTV CVT Fluid is an excellent alternative to original equipment manufacturer fluids in Polaris STEELDRIVE CVT transmissions. The fluid is Warranty Secure, so the factory warranty remains intact when the product is used in the recommended application, and the product itself is backed by the AMSOIL Limited Warranty (G1363).
Recommended applications and service intervals
The recommended application for AUCVT is the Polaris STEELDRIVE CVT transmission. The fluid is positioned narrowly for that gearcase and is not a one-size-fits-all powersports lubricant.
Use in Polaris STEELDRIVE CVT transmissions and follow the original equipment manufacturer oil change recommendation for the specific model and duty cycle.
Do not substitute for Polaris AGL Gearcase Lubricant and Transmission Fluid, Polaris Demand Drive Fluid, or any front-differential or angle-drive lubricant spec.
Do not use in dry primary or secondary CVT clutches where the belt runs in air rather than in oil.
Do not use in automotive (passenger car) continuously variable transmissions, which require fluids meeting passenger-car-specific OEM standards.
For application match confirmation by year, make, and model, use the AMSOIL Vehicle Lookup Guide. Owners weighing engine, gearcase, and CVT lubricant choices for ATVs and UTVs can review options in the AMSOIL ATV Oil Guide. Pair the correct fluid with the OEM-specified service procedure and avoid blending with aftermarket friction additives, which can change the carefully tuned coefficient of friction at the belt-pulley contact.
Typical technical properties
Property
Value
Kinematic Viscosity at 100 C, cSt (ASTM D445)
7.4
Kinematic Viscosity at 40 C, cSt (ASTM D445)
35.6
Viscosity Index (ASTM D2270)
182
Brookfield Viscosity at -40 C, cP (ASTM D2983)
9150
Flash Point, C (F) (ASTM D92)
220 (428)
Fire Point, C (F) (ASTM D92)
236 (457)
Pour Point, C (F) (ASTM D97)
-46 (-51)
Four-Ball Wear Test, scar diameter mm (ASTM D4172 Para 1, 75 C, 1200 rpm, 40 kg, 1 hr)
0.43
Order Synthetic ATV/UTV CVT Fluid
Synthetic ATV/UTV Continuously Variable Transmission Fluid is available in a quart bottle (product code AUCVTQT-EA) and a case of 12 quarts (AUCVTQT-CA). Use of AMSOIL synthetic lubricants does not void a new vehicle or equipment manufacturer warranty, and the product is backed by the AMSOIL Limited Warranty (G1363). Confirm application match for the specific Polaris model with the AMSOIL Vehicle Lookup Guide, review broader powersports lubricant choices in the AMSOIL ATV Oil Guide, then order AMSOIL 100% Synthetic ATV/UTV Continuously Variable Transmission Fluid.
Frequently asked questions
What is the Polaris STEELDRIVE CVT transmission?
Polaris STEELDRIVE is a Polaris-branded continuously variable transmission system, and Synthetic ATV/UTV Continuously Variable Transmission Fluid is positioned specifically for STEELDRIVE CVT applications. Owners should confirm the exact gearbox and fluid spec for the year, make, and model with the AMSOIL Vehicle Lookup Guide before changing fluid.
Is Synthetic ATV/UTV CVT Fluid the same as Polaris Demand Drive Fluid or Polaris AGL?
No. Polaris Demand Drive Fluid lubricates the on-demand front differential and angle drive on many Polaris ATVs and side-by-sides. Polaris AGL Gearcase Lubricant and Transmission Fluid lubricates the main gearcase on a wide range of Polaris models. AUCVT is a separate fluid for Polaris STEELDRIVE CVT transmissions and should not be substituted for AGL or Demand Drive Fluid.
Can this fluid be used in an automotive (passenger car) CVT?
No. Automotive continuously variable transmissions require fluids meeting passenger-car-specific OEM standards, not a powersports CVT formulation. Owners shopping for an automotive CVT fluid should review the AMSOIL CVT Fluid Guide instead.
What viscosity grade is Synthetic ATV/UTV CVT Fluid?
The fluid measures 7.4 cSt at 100 C and 35.6 cSt at 40 C with a viscosity index of 182, giving it a wide useful operating range. The pour point is -46 C (-51 F) and the Brookfield viscosity is 9150 cP at -40 C, so flow is maintained for sub-zero startup.
How often should the fluid be changed?
Follow the original equipment manufacturer oil change recommendation for the specific Polaris model and the way the machine is used. Severe-service operation, including heavy loads, sustained high temperatures, and aggressive driving through tough terrain, can shorten the recommended interval relative to standard recreational use.
Does using Synthetic ATV/UTV CVT Fluid void the factory warranty?
No. The fluid is Warranty Secure, so the factory warranty remains intact when the product is used in the applications shown in AMSOIL product details. Synthetic ATV/UTV CVT Fluid is also covered by the AMSOIL Limited Warranty (G1363).
Will this fluid help reduce CVT shudder?
The friction profile is engineered to keep the belt in firm contact with the variable diameter pulleys, which reduces shudder and supports consistently smooth ratio changes. Persistent shudder can also indicate belt wear, contamination, or a mechanical issue, so a fluid change is most effective alongside a thorough inspection of belt and pulley condition.
