How do you mix a 50:1 gas-to-oil ratio?


Quick Answer

To mix a 50:1 gas-to-oil ratio, pour 5 gallons of gasoline into 12.8 fluid ounces of engine oil. Quantities can be adapted, but achieving the appropriate balance is vital for safety and engine performance.

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Full Answer

Before mixing, it is important to read and fully understand the user's manual for the relevant engine.

  1. Choose the right container

    Select a container that is approved for holding gasoline. This will ensure minimal loss, whether by spillage, evaporation or permeation.

  2. Use high-quality fuels

    Avoid cheap or poor-quality gasoline. Go for higher octane ratings (at least 89) to lower the risk of engine heat damage and piston seizure. The same goes for oil. Choose premium quality for the best engine protection.

  3. Calculate the quantities

    As a general guide, a 50:1 gas-to-oil ratio equates to 1 gallon of gasoline to 2.6 fluid ounces of engine oil; similarly, 2.5 gallons of gasoline will require 6.4 fluid ounces of oil.

  4. Mix the gasoline and oil

    After pouring the oil into the container and adding the gasoline (taking care to avoid contact with the skin), screw the lid on and shake the contents well. Be sure to use this mixture within three months, shaking each time before use.

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