Since 128 fl. oz = 1 gallon, use 6 oz of oil ( for 120 oz of gas, to be exact ).
16 ouncesOne gallon of oil is 6-8 pounds depending on density or 96 to 128 oz.
Divide 3.25 by 8, it will be just under a half oz of oil.
128 oz in a gallon so for every 25 oz you will need one oz of oil, so 128 divided by 25 is 5.12 oz of oil needed.
3 oz. per 1 gallon for a 50:1 ratio
A 50 to 1 (50:1) fuel/oil mixture indicates 50 oz of fuel to 1 oz of 2-cycle oil. There are 128 oz to 1 gallon. Divide 128 by 50 to find how many ounces of 2-cycle oil to add to 1 gallon of fuel: 128 ÷ 50 = 2.56
1.875 oz.
5.12 oz of oil Gallon is 128 oz, two gallons are 256 oz divide by 50 to get 5.12. For every 50 oz of gas you need one oz of oil.
There is 128 oz in a liquid gallon so to achieve a 40 to 1 ratio you would add approximately 3.2 oz of 2 cycle oil to one gallon of gasoline.
There is 128 oz in a gallon. 128 divided by 20 is 6.4, so 6.4 oz of oil to a gallon of gas for 20 to 1
128 oz fit into a US gallon.
Anywhere from 16:1 (8 oz. of oil per gallon) to 20:1 (6.4 oz. per gallon), the lower ratios are better when using castor oil blends; with synthetics like Redline two stroke racing oil, 18 or 20:1 works well. 7 oz. per gallon (18 oz. per gallon) has worked for me for years using Redline.