AMSOIL Motorcycle Octane BoostNow Available in Canada

AMSOIL Motorcycle Octane Boost takes a two-pronged approach to improving motorcycle performance. First, by raising the octane of the fuel, it prevents pre-ignition and the resulting pinging and engine knock. Secondly, this octane booster also contains powerful cleaning additives that keeps fuel systems and combustion chambers in “like new” condition. The result is peak power delivery and throttle response throughout the power band. At the recommended treat rate, it does not harm catalytic converters or oxygen sensors. Recommended for 4-stroke engines only. Also suitable for ATV’s, side-by-sides and 4-stroke snowmobiles.

When is an Octane Booster Needed in a Motorcycle?

When Knocking  and Pinging Occur

In high compression engines, gasoline with insufficient octane levels can ignite before the engine spark takes place. This can cause pinging or knocking which can do serious engine damage. AMSOIL Motorcycle Octane Boost gives gasoline the ability to withstand high compression and prevents pinging and knocking.

Knock Sensors are Working Overtime

Many modern motorcycles are equipped with sensors that identify pinging and knocking. When these sensors detect this situation, engine timing and air/fuel mixtures are modified until the condition is alleviated. Riders can often detect when knock sensors are modifying operating conditions because throttle response and engine output is compromised. While these anti-knock sensors are invaluable and can save your engine from extensive damage, their actions do compromise performance. AMSOIL Motorcycle Octane Boost can prevent knocking and pinging, so that anti-knock sensors can act as an insurance policy that is on standby.

High Octane Fuel is Unavailable

A common situation where an octane booster is needed is when a motorcycle requires mid-grade or premium gasoline, but only regular grade fuel is available. AMSOIL Motorcycle Octane Boost easily raises the octane level of regular grade fuel so that it can withstand the rigors of high compression motorcycle engines. This gasoline additive optimizes engine performance and controls the risk of engine knock and power loss.

Octane Boost Misconceptions

There are many misconceptions about octane boost and the roles it can perform. The main point to drive home is that no octane boost product will increase the energy content of gasoline. Nor will any octane booster provide a massive horsepower increase in engines using gasoline with adequate octane levels.

As stated, in situations where lower octane fuel cannot withstand the pressures in high compression engines, octane boost will prevent pre-ignition, knocking, pinging and performance loss. In these cases, the octane boost will maintain proper power output and prevent engine damage from excessive knocking.

In situations where the gasoline octane levels are adequate, an octane boost will not provide a discernible performance enhancement.

That being said, we’ve all run into a batch of fuel that simply does provide adequate performance. AMSOIL Motorcycle Octane Boost can improve low octane gasoline so that it can provide satisfactory operation.

Fuel System and Combustion Chamber Cleaning

AMSOIL Motorcycle Octane Boost also improves performance by cleaning carburetors, fuel injectors, combustion chambers and spark plug tips. This improves starting and performance from idle to red line. Combustion chamber deposits can also play a role in pre-ignition knocking/pinging as well as post-ignition detonation. Tiny carbon deposits can hold extreme amounts of heat that can actually ignite the fuel-air mixture before or after the ignition spark. This phenomenon can not only hurt performance, but also cause engine damage. The potent cleaning agents in AMSOIL Motorcycle Octane Boost can clean out these deposits to reduce this risk and maintain optimum performance.

Suitable Applications for AMSOIL Motorcycle Octane Boost

This product can be used in any air-cooled or liquid-cooled four-stoke motorcycle engine. It is suitable for on-road or off-road use. Other applications include:

  • Four-stroke snowmobiles
  • Four-stroke ATV’s
  • Side-by-sides

Mixing Rate

Metric Mix Rate

  • 10 millitres per litre.
  • A single 118 millilitre bottle can treat up to 15 to 22.7 litres.

US Gallon Mix Rate

  • 1.3 US ounces per US gallon
  • A full 4 US ounce bottle can treat up to 4 to 6 US gallons.

Moderate over-application will not cause engine, sensor or catalytic converter damage.


AMSOIL Motorcycle Octane Boost can be used in conjunction with AMSOIL Gasoline Stabilizer and AMSOIL Quickshot Powersports Gasoline Additive.


If spilled on painted or metal surfaces, discoloration can occur. Immediately clean up spills with a dry towel.