Advanced Two-Stroke Oil For Modern Sleds

A two-stroke oil must excel in three key areas to protect today’s powerful snowmobiles.

Modern sleds deliver power, performance and efficiency. With each new model, original equipment manufacturers (OEMs) seem to push the limits of performance even further. This allows you to ride faster and push your sled harder, while using less gas and oil and producing fewer emissions.

A great ride for you, but brutal operating conditions for your sled. In addition to having to protect a hotter, more powerful engine, today’s direct-injection engines use less oil than older sleds to help curb emissions.

Modern Sleds

The Polaris* RMK* 850 is a prime example of the state of the industry. Its two-stroke oil engine can make nearly 170 horsepower. That’s more power than some cars. This underscores the need to use a durable, high-quality, 2 stroke oil that’s proven to stand up to the punishment doled out by modern engines. For maximum engine performance and life, two-stroke oils should focus on three performance areas:

  • wear protection
  • exhaust power valve cleanliness
  • cold-flow properties.

The intense heat and friction inside a snowmobile engine can overwhelm inferior oils, leading to piston scuffing and wear. Excellent lubricity (oil’s ability to reduce friction) is essential for maximum wear protection.

Deposit Formations

High heat and increased power can also cause deposit formation on exhaust power valves, which leads to valve sticking. The power valves automatically open or close based on operating conditions to increase throttle response at low rpm while maximizing top-end power. They expand the sled’s powerband, delivering a better experience for the rider. However, their location in the exhaust port exposes them to hot gases, which can lead to deposits that cause valves to stick, reducing performance.

Additionally, today’s snowmobile engines direct less oil to critical components, through narrower passages, for longer distances. Oils that don’t remain fluid in sub-zero cold can fail to reach components at startup, promoting wear.

Amsoil formulated AMSOIL Interceptortw0-stroke oil with today’s sleds in mind. It remains fluid down to -69°F (-56°C) to ensure oil reaches critical components in the coldest weather, keeping your engine protected.


INTERCEPTOR® Synthetic 2-Stroke Oil also delivers exceptional wear protection and exhaust-power-valve performance.  Amsoil tested INTERCEPTOR in a 2019 Polaris RMK 850 used in a rental fleet in the Canadian Rockies. The sled was flat-out abused, with riders pinning the throttle through deep powder day after day for an entire riding season. Afterward, we disassembled the engine and, as the images show, the piston contained virtually no scuffing and the power valves were in great shape and did not stick.

In all three critical areas, INTERCEPTOR delivers maximum performance and life from your sled. AMSOIL is so confident in its performance, it is  backed by the “Runs on Freedom™ Limited Snowmobile Warranty”, which covers repairs to qualifying parts in newer sleds that use INTERCEPTOR exclusively for up to two years or 5,000 miles (8,000 km). Check out warranty (AMSOIL. ca/of warranty in Canada) for details.

Amsoil has great oil with a great warranty to match for today’s sleds. For more information go to AMSOIL.COM.