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.
It depends on the mixing ratio of gasoline / oil for the specific piece of equipment you will use the gas / oil mix. Most lawn equipment such as weed eaters and leaf blowers require a 32:1 mixture. Since 1 gallon of gasoline is 128 ounces, it is necessary to mix 128 ounces (or 1 US gallon) of gasoline to 4 ounces of 2 cycle oil to equal 32:1 ratio.
6 ounces
3.2 oz 2-cycle oil to 1 gallon gasoline
To achieve a 32:1 ratio with 1 gallon of gasoline, you would need to mix 4 fluid ounces of 2-stroke oil with the gasoline. This results in a ratio of 32 parts gasoline to 1 part oil.
32 Ounces gasoline = 1 Quart gas *1 Quart gasoline to 1 Ounce 2-cycle oil AND THEN, FOR 1 GALLON GASOLINE CAN 4 Quarts gas = 1 Gallon gasoline *1 Gallon gasoline (fill line) to 4 Ounces 2-cycle oil OR, FOR 2 GALLON GASOLINE CAN *2 Gallons gasoline (fill line) to 8 Ounces 2-cycle oil USING ANY OF THESE SCENARIOS, DON'T FORGET TO STIR A LITTLE BIT, WITHOUT SPILLING. *DO NOT ALLOW GAS OR OIL TO GET ON YOURSELF OR CLOTHING. AVOID INHALATION OF GASOLINE FUMES. DO NOT DRINK OR SWALLOW GASOLINE OR OIL. KEEP GASOLINE AND OIL AWAY FROM CHILDREN. MIX IN A WELL VENTILATED AREA. PROTECT FROM OTHERS, SPARKS, AND FLAME. GASOLINE AND OIL MIX IS POISONOUS, VOLATILE AND FLAMMABLE. GASOLINE IS ALSO POISONOUS, VOLATILE, AND FLAMMABLE. 2 CYCLE OIL IS POISONOUS.
2.6 ounces of oil to one gallon of unleaded gasoline.
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.
Divide the number of ounces in a gallon of gasoline by the number of ounces of oil (both fluid measurements). 128/2.6=49 (about) Essentially this is a 50:1 mix. Conversely if you want a 50:1 mix divide 128 by 50. Answer is 2.56. for 2 gallons 256/50=5.1 ounces. 2-1/2 gallons of gas will take 6.4 ounces of oil.
For a 40:1 fuel-to-oil ratio, you would need 3.2 ounces of 2-cycle oil for every gallon of gas. To achieve this, simply measure out 3.2 ounces of oil and mix it with one gallon of unleaded gasoline. Make sure to shake the mixture well before use to ensure proper lubrication for your Poulan weed eater.
To find the ratio of 8 ounces to a gallon, first note that there are 128 ounces in a gallon. Therefore, the ratio of 8 ounces to a gallon is 8:128, which simplifies to 1:16. This means that 8 ounces is one-sixteenth of a gallon.
A 40:1 ratio would work out to 3-3.5 oz. of 2 cycle oil, to one gallon of fuel.
There are 128 ounces in a gallon. So, the ratio of ounces to gallons is 1:128.