2-Cycle Snow Blower Fuel & Oil Ratio: How to Mix Fuel & Oil for Your Snow Thrower

What is the proper 2-stroke fuel and oil mix for a single-stage snow thrower?

Two-cycle (or 2-stroke) engines don't run on pure gasoline like your automobile. To operate correctly, 2-cycle engines require a precise mixture of fuel and oil, which provides both the combustion needed to power the engine and lubricant for its various moving snow blower parts.

If you're not sure whether your snow blower runs on a 2-cycle fuel and oil mixture, check the oil cap. You will usually see the manufacturer's recommended fuel type, and, if it's a 2-stroke engine, the correct 2-cycle oil ratio.
Our two-cycle snow throwers use a 50:1 ratio of gasoline to 2-cycle oil. 
A 50:1 ratio is a mix consisting of 2.5 ounces of 2-cycle oil with 1 gallon of gasoline. 

Calculate the correct 2-cycle oil ratio

Check out this chart before fueling to make sure you're using the correct 2-cycle fuel and oil mixture:





OIL per 1 U.S.



(128 oz.)



GALLON Gasoline

(160 oz.)





32:1 4 oz. 5 oz. 31.25 mL
40:1 3.2 oz.  4 oz. 25 mL
50:1 2.6 oz. 3.2 oz. 20 mL

Mixing the 2-cycle oil and fuel mixture

Start by pouring the 2-cycle oil into an empty gasoline-safe container, according to the measurement chart above. Then, pour 1 gallon of gasoline into the can - adding the fuel will cause the two liquids to combine; no additional agitation is necessary. If you plan to store the mixture for more than one month, add a fuel stabilizer to the gasoline before mixing, when the gas is fresh. Use a funnel when filling your snow blower fuel reservoir, and clean up any spills immediately.

Stay safe: Always mix 2-cycle fuel oil and fuel in an approved gasoline- safe container prior to filling the engine. Use a separate gas can for 2-cycle oil mixture and label the can accordingly. Keep in mind that the fuel capacity of these engines is usually less than a gallon, so you'll have to use one mixture for multiple fuel fills. Add a fuel stabilizer to help increase the shelf life of fuel. 

Part Finder

Don't know your model number?

You can use the Part Finder to help find your model and the right part for your machine.

Find Matching Models