AMSOIL 5W-50 100% Synthetic ATV/UTV Motor Oil Kit

AMSOIL 5W-50 100% Synthetic ATV/UTV Motor Oil

AMSOIL 5W-50 100% Synthetic ATV/UTV Motor Oil is the “no-compromise” choice for riders who push their machines hard.
It is a wide-range synthetic that handles cold starts, heavy loads and high heat without breaking a sweat.

This grade is a favorite for:

• High-performance side-by-sides
• Hard-working utility machines
• Riders who run big tires, steep hills and deep mud

Backed by a 4.9-star rating and over 20 five-star reviews, it’s built for people who expect their oil to keep up with their riding—every single trip.

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Wide-Range 5W-50 Protection For Real-World Riding

Fast Flow When Cold, Strong Film When Hot

The 5W-50 viscosity range is what makes this oil special.

• The “5W” side gives you quick flow on cold starts.
• The “50” hot side provides a thick, protective film once everything is at operating temperature.

That combination means:

• Easy starts on cool mornings
• Confident protection when the engine is fully loaded
• Stable oil pressure when you hold it wide open on long climbs

If you ride all season in changing weather and want one oil that can handle it all, 5W-50 is a powerful option.

Ideal For Machines That Live Near Their Limit

This oil is made for:

• Sport side-by-sides that see aggressive trail runs
• Utility machines that tow, haul and plow year-round
• Riders who run larger tires, lifts and accessories

When engines see more heat, more load and more RPM than stock, this heavier hot-side viscosity gives you extra margin. It helps keep a strong oil film on bearings, rings and gear surfaces when the machine is working hard.

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Built Around Polaris ATV/UTV Oil Change Kits

Complete Kits For Easy, Correct Service

AMSOIL offers ATV/UTV Oil Change Kits built around this 5W-50 oil.
Each kit includes:

• 2, 2.5 or 3 quarts of AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil
• One matching oil filter designed for the covered Polaris engine

That means you can:

• Grab one box
• Change the oil and filter
• Know you used the correct amount and specification

No guesswork, no extra bottles on the shelf.

Polaris Fitment Overview (PK1–PK4)

The kits are designed for Polaris models only and organized by part number:

• PK1 – ACE 900, GENERAL 1000, and many 2013+ RANGER 900/1000 and 2013+ RZR 900/1000 (non-turbo).
• PK2 – Popular utility and sport models such as ATP, Hawkeye, Magnum, RANGER 400/early 500, Scrambler, Sportsman, Trail Blazer, Trail Boss and Xplorer in specific displacements.
• PK3 – ACE 500/570, newer RANGER 500, plus RANGER and RZR 570/700/800, and several Sportsman 600/700/800 models.
• PK4 – Specific fitment for select RZR 1000 Turbo applications.

You simply match your model and year to the correct kit, then perform a complete oil and filter change using the included products.

(Polaris and all model names are trademarks of Polaris. No affiliation or endorsement is claimed.)

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Heavy-Load Protection For Hard-Working Powertrains

Stands Up To Heat, Hills And Big Tires

Machines that tow, carry, plow or run oversized tires create huge stress:

• Higher load on the engine
• More strain on driveline parts
• Extra heat in a shrouded engine bay

AMSOIL 5W-50 is engineered to handle:

• Sustained high temperatures without thinning excessively
• Steep grades and long pulls without losing film strength
• Slow, heavy work where airflow is poor and heat builds fast

That means your engine stays protected when you are climbing, dragging or pushing heavy loads.

Helps Engines Run Smooth And Strong

With proper lubrication, engines can:

• Hold compression longer
• Run quieter and smoother
• Deliver more consistent power under load

This 5W-50 synthetic helps:

• Reduce wear on pistons, rings and bearings
• Support clean combustion by resisting sludge and deposits
• Maintain stable performance from the first hour to the next oil change

You feel that as smooth power delivery and strong pull, even in tough conditions.

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Wet-Clutch Friendly And Shared-Sump Ready

Designed For Shared Engine/Transmission Sumps

Many Polaris ATVs and UTVs share one oil between:

• The engine
• The transmission
• The wet clutch

This 5W-50 is tuned for that shared-sump environment. It is built to:

• Handle shear forces from transmission gears
• Maintain proper viscosity across the service life
• Provide the right friction curve for wet-clutch engagement

You’re not “making do” with a car oil. You’re using a fluid engineered for the exact job.

Confident Clutch Feel And Smooth Shifts

The formula supports:

• Strong clutch grip when you launch or pull a load
• Smooth, predictable engagement at low speeds
• Consistent shift feel as the hours add up

This is especially important with:

• Big tires and clutches under extra stress
• Technical riding that requires frequent low-speed control
• Heavy towing or plowing where you work the clutch constantly

The oil supports a clutch and gearbox you can trust when you really need it.

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Who Should Choose AMSOIL 5W-50 ATV/UTV Motor Oil?

This oil is a great match if you:

• Own a Polaris ATV or UTV covered by one of the AMSOIL kits
• Run your machine near its limit with towing, hauling or aggressive riding
• Use larger tires, lifts or heavy accessories that add load
• Ride in changing temperatures and want one wide-range oil
• Prefer simple, kit-based oil changes with oil and filter in one box

In short, AMSOIL 5W-50 100% Synthetic ATV/UTV Motor Oil is the top-shelf, wide-range choice for riders who want their engine oil to work as hard as they do—on every job, every ride and every trail.

Fitment info:

PK1:

• ACE* 900
• GENERAL* 1000
• 2013+ RANGER* 900 & 1000
• 2013+ RZR* 900 & 1000
• DOES NOT fit turbo models

PK2:

• ATP* 330, 500
• Hawkeye* 300, 400
• Magnum* 325,330, 500
• RANGER* 400
• Model years 2016 and previous – RANGER* 500
• Scrambler* 500,850, 1000
• Sportsman* 300,400,450,500,550,570,850, 1000
• Trail Blazer* 330
• Trail Boss* 325, 330
• Xplorer* 500

PK3:

• ACE* 500, 570
• 2017 + RANGER* 500
• RANGER* 570,700, 800
• RZR* 570, 800
• Sportsman* 600,700, 800

PK4:

• RZR 1000 Turbo