Mix it Up – How to fuel your STIHL tools

Using the right type of fuel is critical in the safe and efficient operation of your STIHL tools. It is important to ensure that when selecting your fuel & oil and mixing it, you follow these guidelines. This will increase performance and extend the life of your tool.

Read Your Manual

Before mixing any fuel, read your operators manual for your specific tool. This will provide you with additional mixing information that you need to follow. If you’ve misplaced your manual, you can visit www.stihl.ca’s online manual page to find the instructional manual for your product.

Use the right fuel storage container

We recommend using a non-spill container. Don’t have one? We have them in stock and are happy to help you find the right size for the amount of fuel you are mixing.

Go Premium

When driving past your local refueling station, it’s easy to go right to the cheapest station and grab regular fuel. While this may be okay for many cars, we don’t recommend this for your STIHL tools. Mid-grade unleaded gasoline with a minimum octane rating of 89 is recommended for your mixture. Fuel with a lower octane rating may increase engine temperatures, increasing the risk of piston seizure and damage to the engine. If you purchase your fuel from a brand name station, you’ll want to purchase the fuel that has the least amount of ethanol. If possible, find a fuel that has zero ethanol. To read more about the harmful effects of ethanol on your outdoor power equipment tools, visit the LookB4YouPump website.

We also recommend you use STIHL’s 2 Cycle Premium oil to give your engine the best protection & lubrication.


All STIHL gasoline-powered equipment uses a 50:1 gasoline/oil mixture. For high-performance fuel that requires no mixing, choose STIHL MotoMix® premixed fuel. Here is a chart that shows you the correct mixing ratio:

Shake Shake Shake

Give the can a good shake after adding your fuel and your oil to allow the fuel to blend and mix together. Be sure to close the container and seal the lid before shaking so you don’t spill.


Only Mix What You’ll Use

It is recommended that you only mix sufficient fuel for a few days’ work. Fuel storage shouldn’t exceed 30 days. This is because of the ethanol and other fuel additives that can react with moisture and fuel system parts. When using fuel that has been stored for any amount of time, shake the mixture in the canister before fueling your machine to reduce any separation.