How to Mix Chainsaw Gas

Mixing chainsaw gas is a simple process. Firstly, you need to gather the necessary materials which include two-stroke oil, unleaded gasoline, and a clean container for mixing. Start by adding the correct amount of two-stroke oil into the container according to your chainsaw’s specifications.

Then add fresh unleaded gasoline up to the required level as indicated in your user manual. Finally, using a long stick or rod mix all ingredients together until it forms an even homogenous blend. Make sure not to fill more than 80% of your fuel tank with mixed fuel since there needs to be room for expansion during use due to heat generated from engine vibrations while running.

Once done properly you have successfully mixed your own chainsaw gas!

  • Gather the Necessary Materials – In order to mix chainsaw gas, you will need a fuel container, fresh unleaded gasoline (87 octane or higher), and two-stroke engine oil.
  • Make sure that all of these materials are within easy reach before beginning to mix your gas.
  • Measure Out the Gasoline – Using an appropriate measuring device for both safety and accuracy, measure out 1 gallon of unleaded gasoline into your fuel container.
  • Add Oil to Gasoline– For every gallon of gasoline being used in your mixture, add 2 ½ ounces of two-stroke engine oil directly into the fuel canister with the gasoline already inside it.
  • Closely follow any specific instructions provided by your chainsaw’s manufacturer as they may differ from this standard ratio depending on its model and makeup.
  • Mix – Use a long stirring stick or rod to thoroughly mix together the gasoline and engine oil until it is fully combined without leaving any clumps or pockets within the mixture itself.
  • Fill Up Chainsaw Fuel Tank – Slowly pour in just enough of the mixed solution (gas/oil) needed to fill up your chainsaw’s tank completely without overfilling it.
How to Mix Chainsaw Gas


How Do You Mix 50 to 1 Chainsaw Fuel?

Mixing chainsaw fuel is a relatively simple process. Begin by filling your gas can with fresh, clean unleaded gasoline that does not contain ethanol or methanol. Next, add 2-cycle engine oil to the can in the proportion of 50 parts of gasoline to 1 part oil (50:1).

Make sure you use a high-grade two-stroke engine oil specifically designed for air-cooled engines used in outdoor power equipment like chainsaws. Finally, securely close the lid on your gas can and gently shake it for about 30 seconds to ensure that all contents are thoroughly mixed together before using it in your chainsaw.

What Ratio Do You Mix Chainsaw Gas?

When mixing the fuel for your chainsaw, it’s important to use a 50:1 ratio of gasoline to oil. This means that you would mix 1 gallon of gas with 2.6 ounces (about 3/4 cup) of two-cycle engine oil. Make sure to only use fresh unleaded gasoline and 2-stroke air-cooled engine oil as specified by the manufacturer in order for your chainsaw to work correctly and safely.

Use only containers with clearly marked measurements and be careful not to spill any fuel when filling up your chainsaw’s tank, as spilled petrol can create a fire hazard if it comes into contact with anything hot or flammable like spark plugs, muffs, or other parts on the machine itself.

How Much 2-Cycle Oil Do You Put in a Gallon of Gas for a Chainsaw?

When filling your chainsaw with gasoline and two-cycle oil, the amount of two-cycle oil you add will depend on what type of engine your chainsaw has. For a standard non-catalyzed engine, you’ll want to use a ratio of 50:1, which means adding 2.6 ounces (about 1/3 cup) of two-cycle oil for every gallon of gas. For catalyzed engines, use a 40:1 ratio instead; this requires 3.2 ounces (a little over 1/3 cup) per gallon.

To ensure optimal performance from your chainsaw’s engine, always check the owner’s manual for specific instructions on mixing ratios for your particular model, and never exceed the recommended ratio when refueling.

What is the Gas Mixture for a 2-Cycle Chainsaw?

A 2-cycle chainsaw typically runs on a gas mixture of 50:1. This means that for every 50 parts of gasoline, 1 part is two-stroke engine oil. It’s important to use the correct fuel/oil ratio in order to prevent damage and improve performance.

For best results, use high-quality unleaded gasoline and oil specifically designed for air-cooled two-cycle engines such as lawnmowers or chainsaws. Always follow the manufacturer’s instructions when mixing fuel for your specific model of chain saw.

How to mix your own fuel for STIHL chainsaws & equipment

50 to 1 Fuel Mix Calculator

Using a 50 to 1 fuel mix calculator is an easy and effective way to accurately measure the correct gasoline-oil ratio when preparing your two-stroke engine. By entering the amount of oil and gas you wish to use, this calculator will give you a precise result that can be used for all types of machines such as lawnmowers, chainsaws, trimmers, snow blowers, and more. This calculation tool takes into account important factors like temperature and altitude so that you can achieve optimal performance from your machine.

Knowing exactly how much oil and gas to mix is essential for maintaining the life of your engine, so using a 50 to 1 fuel mix calculator is definitely worth it!

Best Chainsaw Fuel Mix Ratio

When filling your chainsaw with fuel, it is important to use the correct fuel/oil mix ratio. The recommended ratio for most two-stroke engine chainsaws is a 50:1 mixture of unleaded gasoline and two-stroke oil. This means that for every 1 gallon of unleaded gasoline, you should add 2.6 fluid ounces of two-stroke engine oil.

Be sure to always check the owner’s manual for specific instructions regarding your model’s exact fuel/oil mix ratio in order to maintain optimal performance levels and avoid any potential damage from incorrect mixtures.

Stihl Chainsaw Oil Mix Ratio

When using a Stihl chainsaw, it is important to use the correct oil mix ratio. The recommended oil mix ratio for all 2-cycle Stihl engines is 50 parts of unleaded gasoline to 1 part of two-stroke engine oil. For higher performance and reliability, it is best to use a fuel/oil mixture that meets or exceeds the requirements specified by Stihl for your specific model or type of engine.

Husqvarna Chainsaw Fuel Mix Ratio

Husqvarna chainsaws require a fuel mix ratio of 50:1, which means that you should mix 2.6 ounces of two-stroke engine oil with one gallon of gasoline. This is the standard recommended fuel mixture for Husqvarna chainsaws and other small two-stroke engines to ensure optimal engine performance and efficient operation.

To ensure proper mixing, use a gas can with an integrated measuring cup or use a separate measuring cup to measure out the correct amounts of oil and gasoline before pouring them together into the tank.


Overall, it’s important to consider the type of chainsaw you have and the type of fuel needed when mixing your own chainsaw gas. The ratio should be two-part gasoline to one-part oil for a two-stroke engine. If that ratio is too rich or too lean, your chainsaw won’t run properly.

It’s also essential to make sure all parts are in good condition and clean before refueling. With proper preparation and knowledge about how much gas and oil are necessary, you can mix up the perfect batch of fuel for your chainsaw.

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