Polaris RANGER Oil Change Kit PS-4 5W-50 Full Synthetic, 4.5 qt with OEM Filter for ProStar 1500

If you own a Polaris RANGER with the ProStar 1500 powerplant, using fluids and filters built to Polaris specifications keeps the engine running clean and reliable under heavy loads and varied temperatures. This factory kit bundles the PS-4 full synthetic 5W-50 formula—tuned for powersports use—and an oil filter chosen to fit the ProStar 1500, giving you what you need to perform a correct oil change quickly and confidently.

How does this oil suit off-road and heavy-duty use?

The PS-4 5W-50 full synthetic blend is engineered to perform across a wide temperature range and resist breakdown during intense operation. Its formulation helps protect moving parts from wear while controlling deposits that can reduce performance over time.

• Wide viscosity span for both cold starts and high-temperature operation
• Full synthetic base to maintain film strength under load
• Additives designed to limit deposits and reduce wear
• Resists oxidation for longer oil life in severe conditions

What does the kit include and why is that important?

This OEM kit contains 4.5 quarts of PS-4 SAE 5W-50 full synthetic oil and one oil filter matched to Polaris RANGER ProStar 1500 specifications. Having the correct oil volume and a proper-fit filter ensures a proper service that preserves engine tolerance and factory performance expectations.

• 4.5 quarts of PS-4 5W-50 full synthetic oil—pre-measured for a correct fill
• One OEM oil filter to meet Polaris sealing and flow requirements
• Eliminates guesswork when sourcing compatible lubricant and filter
• Helps maintain warranty and service interval consistency

How does the additive system protect the engine?

Polaris crafts a custom additive package for PS-4 that targets common powersports stressors: deposit formation, moisture intrusion, and internal corrosion. These chemical agents work together to keep internal surfaces cleaner and moving parts protected, which supports dependable operation in varied climates.

• Deposit control additives reduce sludge and varnish buildup
• Wear inhibitors preserve critical components under high loads
• Corrosion resistors and moisture control guard against rust
• Formulation supports long-term engine cleanliness and performance

Will this oil perform in extreme temperatures?

Yes—PS-4 5W-50 offers a viscosity range that covers very low to very high ambient conditions, helping the engine start and run consistently from cold mornings to hot working days. Its synthetic base and stabilizers reduce viscosity change and oxidative thinning when the engine heats up.

• Cold-start protection for low-temperature operation
• High-temperature viscosity control to maintain oil film
• Reduced volatility to limit oil consumption in heat
• Engineered for powersports climate extremes and heavy loads

Who is this for: This kit is aimed at Polaris RANGER owners with the ProStar 1500 engine who prefer factory-specified maintenance items. It's useful for DIY mechanics, fleet managers, or service shops that want an OEM-quality oil change solution that simplifies upkeep and helps preserve engine performance and longevity.