Delivers Upgraded Performance and Protection
Purpose Built for Polaris Ranger, RZR and Sportsman – A Cost-Effective Substitute for Polaris PS-4 & PS4 Extreme-Duty Motor Oil
AMSOIL Full Synthetic 5w50 ATV-UTV Engine Oil (Product Code: AUV50) is formulated to deliver upgraded performance for hard-working and performance ATVs and UTVs. Whether tackling tough chores around the property or riding aggressively on the trail, its outstanding severe-service formulation protects hot, high-revving engines against wear. Specifically formulated for Polaris Ranger, RZR and Sportsman, AMSOIL 5w50 ATV-UTV Engine Oil is a cost-effective substitute for Polaris PS-4 & PS4 Extreme-Duty Motor Oil. It is purpose-built for use in Polaris ATV and UTV engines. A high-performance aftermarket alternative, AMSOIL ATV-UTV Engine Oil is Warranty Secure™ and will not void your ATV or UTV warranty.
AMSOIL Synthetic 5w50 ATV-UTV Engine Oil is recommended for use in ATVs and UTVs that require a 5w50 motor oil. It is formulated specifically for use in the engines of the following Polaris ATVs and UTVs:
- Polaris Ranger
- Polaris RZR
- Polaris Sportsman
- Protection for demanding chores and terrain
- Superior all-weather performance
- Wet-clutch compatible
- Cost-effective, high-performance substitute for Polaris PS-4 and PS4 Extreme-Duty motor oil
- Warranty Secure™

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AMSOIL Full Synthetic 5w50 ATV-UTV Engine Oil Product Code Pkg/Size AUV50QT-EA Quart Bottle AUV50QT-CA Quart Bottles (case of 12) -
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 5w50 ATV UTV Engine Oil’s synthetic technology delivers reserve protection against heat, providing reliable wear protection and aiding in cooling shrouded engines.
Premium, Purpose-Built Aftermarket Alternative
AMSOIL Synthetic 5w50 ATV-UTV Engine Oil is purpose-built for use in Polaris ATVs and UTVs. It offers enthusiasts a high-performance substitute to Polaris PS-4 and PS4 Extreme-Duty motor oil.
Provides Superior All-Weather Performance
AMSOIL 5w50 ATV-UTV Engine Oil provides superior protection during hot summers and cold winters. Its durable synthetic design makes it ideal for applications calling for either 5w50 or 10w50 oils.
Wet-Clutch Compatible
AMSOIL 5w50 ATV-UTV Engine Oil contains no friction modifiers and promotes smooth shifting and positive clutch engagement. These oils control heat and help improve clutch life.
RACING IS RESEARCH™
AMSOIL Synthetic ATV-UTV Engine Oils underwent on-track testing in the ATVs and UTVs of AMSOIL-sponsored professional riders in the AMSOIL GNCC Series. They are fine-tuned for outstanding wear protection and consistent clutch feel.
Applications
AMSOIL Synthetic 5w50 ATV-UTV Engine Oil (AUV50) is recommended for use in ATVs and UTVs that require a 5w50 motor oil. It is formulated specifically for use in the engines of the following Polaris ATVs and UTVs:
- Polaris Ranger
- Polaris RZR
- Polaris Sportsman
AMSOIL recommends Synthetic 5w50 ATV-UTV Engine oil as a substitute for Polaris PS-4 and PS-4 Extreme-Duty motor oil.
Note: AMSOIL Synthetic ATV-UTV Engine Oils are a cost-effective, high-performance substitute for vehicle manufacturer-branded motor oils. They are are Warranty Secure™, keeping your factory warranty intact, and are also backed by the AMSOIL Limited Warranty. For details, please see below.
Service Life
Follow the original equipment manufacturer’s oil change recommendation.
WARRANTY SECURE™
AMSOIL products are Warranty Secure™, keeping your factory warranty intact. AMSOIL products are also backed by the AMSOIL Limited Warranty. For details, click the link below.
Learn more about Warranty Secure™ and the AMSOIL Guarantee. Shipping for Online and Catalog Customers
Online and catalog customers receive FREE standard ground shipping on orders of $100 or more when shipped to a valid address in the continental United States, including APO and FPO military post boxes. AMSOIL does not ship to PO Boxes. The $100 minimum does not include taxes, fees or other charges. For online and catalog retail orders totaling less than $100, a flat shipping rate of $8.50 will apply in the continental U.S.
Please Note: AMSOIL Dealers and Preferred Customers are not eligible for free shipping. Orders containing only clothing and promotional materials totaling less than $20 are subject to $5 shipping and handling.
For more information, please visit the AMSOIL, Inc. website: AMSOIL Shipping, Sales Tax and Product Return Guidelines
Return Policy
Please visit the AMSOIL, Inc. website: AMSOIL Shipping, Sales Tax and Product Return Guidelines