3rd December 2019

quora
18

Can you use regular unleaded instead of e85?

No, you can use regular unleaded gas in your flex fuel vehicle. It will not harm the motor. You should get better mileage than when using E85, which is up to 85% ethanol.

Then, is it better to use e85 or regular gas?

E85, or flex fuel, is a blend of 85% ethanol and 15% gasoline that can be used in vehicles specially designed to run on it – as well as regular gasoline. The average price of a gallon of gas is about $3.54, according to AAA. So if your car can run on flex fuel as well as gasoline, the choice seems clear … but it's not.
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