Quote:

How many gallons of Methanol does it take to get 50 gallons of E75 up to E85?

Is there a formula somewhere?



33 1/3 gallons to get it to E85

50 gallons of e75 has 12.5 gallons of gasoline. Take 12.5 and divide by .15 (15%) to get the total number of gallons to represent E85 83.33 gallons, subtract 50 you started with = 33.33 gallons of E100 required.