how much 50 to 1 oil mixture for 1 imperial gallon of gas?

To create a 50:1 oil mixture for 1 imperial gallon of gas, you would need approximately 2.5 ounces (about 75 milliliters) of two-stroke oil. This ratio means for every 50 parts of gas, you mix in 1 part of oil. Since there are 128 ounces in an imperial gallon, dividing that by 50 gives you the amount of oil needed.