Amsoil Authorized Dealers John & Zenaida Cardell

10W-40 (AUV40)

Amsoil 10W-40 Synthetic ATV/UTV Engine Oil (AUV40)

Product Highlights

Amsoil Synthetic ATV/UTV Motor Oil is formulated to deliver upgraded performance for hard-working and performance ATVs and UTVs. Its outstanding severe-service formulation allows riders to confidently and safely push their machines to the limit, whether tackling tough chores around their property or riding aggressively on the trail.

Amsoil synthetic technology protects hot, high-revving engines against wear. Amsoil Synthetic ATV/UTV Motor Oil is Warranty Secure™ and will not void your ATV or UTV warranty. It is a cost-effective, high-performance alternative to original equipment manufacturer (OEM) fluids.

Severe-Service Engine Protection

Many enthusiasts modify their ATVs or UTVs with roof and door panels, skid plates, a winch, a plow or other accessories that add weight and increase the severity of operation. Aggressive riding and tackling tough terrain place additional stress on the engine. Increased heat generated during severe-duty operation causes oils designed for standard service to break down sooner, increasing the risk for wear. Amsoil Synthetic ATV/UTV Motor Oil’s synthetic technology delivers reserve protection against heat. It provides reliable wear protection and aids in cooling shrouded engines.

Package Sizes (AUV40)

Code Sizes Units
AUV40QT (AUV40QT-EA) Quart Each
AUV40QT (AUV40QT-CA) Quart Case of 12

Superior All-Weather Performance

Amsoil 10W-40 Synthetic ATV/UTV Motor Oil provides superior protection during hot summers and cold winters. Its durable synthetic design makes it ideal for applications calling for either 10W-40 or 10W-50 oils.

Wet-Clutch Compatible

Amsoil Synthetic ATV/UTV Motor Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. It controls heat and helps improve clutch life.


Amsoil Synthetic ATV/UTV Motor Oil underwent on-track testing in the ATVs and UTVs of Amsoil-sponsored professional riders in the Amsoil GNCC Series. It is fine-tuned for outstanding wear protection and consistent clutch feel.

  • Protection for demanding chores and terrain
  • Delivers consistent clutch feel
  • Superior all-weather performance
  • Wet-clutch compatible

Premium, Purpose-Built Alternative

Amsoil 10W-40 Synthetic ATV/UTV Motor Oil is formulated specifically for use in Polaris® Ranger®, RZR® and Sportsman® UTVs and ATVs. It offers a cost-effective, high-performance alternative to OEM-branded fluids.


Amsoil 10W-40 Synthetic ATV/UTV Motor Oil is recommended for use in ATVs and UTVs that require a 10W-40 motor oil, including the Polaris Ranger, Polaris RZR and Polaris Sportsman. Amsoil recommends 10W-40 Synthetic ATV/UTV Motor Oil in place of Polaris PS-4 and PS-4 Extreme Duty.


Follow the original equipment manufacturer's oil change recommendation.


Outboard Synthetic 2-Stroke Oil is Warranty Secure, keeping your factory warranty intact. Outboard Synthetic 2-Stroke Oil is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the Amsoil Limited Warranty (G1363). For details, visit

Amsoil Injector Oil
Kinematic Viscosity @ 100°C, cSt (ASTM D445) 14.3
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 94.8
Viscosity Index (ASTM D2270) 155
Pour Point °C (°F) (ASTM D97) -44 (-47)
Flash Point °C (°F) (ASTM D92) 244 (471)
Fire Point °C (°F) (ASTM D92 252 (486)
Four-Ball Wear Test
(ASTM D4172B@40kg,75°C, 1200rpm, 1hr), Scar, mm
Noack Volatility, % weight loss (ASTM D5800) 4.2
High-Temperature/High-Shear Viscosity cP (ASTM D5481) 4.1

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