Most 2-stroke engines will run efficiently on 1/2 ounce of oil to a gallon of gas. Make sure it is 2 stroke oil, not regular engine oil.
The ratio of gas to oil at 8 ounces of oil to one gallon of gas is 1:16. This is because there are 128 ounces in a gallon, so 128 ounces of gas to 8 ounces of oil simplifies to 16:1.
To mix oil with gasoline at a 50:1 ratio, you need 2.6 ounces of oil for every gallon of gas. This is calculated by dividing 128 ounces (the number of ounces in a gallon) by 50, which equals 2.56 ounces. Therefore, you would round it to approximately 2.6 ounces of oil per gallon of gas for a 50:1 mixture.
1 gallon = 128 fluid ounces 1/50 of a gallon = 2.56 fluid ounces
1 Gallon = 128 ounces, so 1/20 of 129 = 6.4 ounces (call it 6 1/2 ounces).
There are 16 cups in a gallon. So divide 2.6 by 16. This equals .1625 ounces.
6.4 ounces for each gallon of gas.
To achieve a 50:1 oil-to-gas ratio in a gallon of gas, you would need 2.6 ounces of oil. This is calculated by dividing the total ounces in a gallon (128 ounces) by the ratio (50). Therefore, for every gallon of gas, you should mix in approximately 2.6 ounces of oil.
Since there are 128 ounces in a gallon, to get a 25:1 mix using 1 gallon of gas means you need 128/25 = 5.12 ounces of oil.
Googling "one gallon in ounces" gives you 128. 1/16 of that is 8. So for each gallon of gas you'd need a measuring cup of oil.
6 ounces
5.5 ounces to a US Gallon which is 128 ounces. 24 divided into 128 = 5.33
1 gallon of oil to 250 gallons of gas is 1.953125 ounces per gallon; you would need 39.0625 ounces of oil for 20 gallons of gas.