what gas is better

Asked by Jan 16, 2015 at 06:37 AM about the 2013 Ford Focus SE Hatchback

Question type: General

does it hurt the car to put regular unleaded 87 octane in a car that is flex fluid or can you
use both.  some one says less mileage with flex fluid, But the  per

4 Answers

31,315

No problem.

3 out of 3 people think this is helpful.
78,525

Correct. That is why it is called flex fuel. You will get better fuel mileage as the methanol decreases in the fuel, but it looks like we are stuck with a 10 percent mix minimum in today's fuel. My neighbors rig is a flex fuel, and during a trip he tried E85 for 1 tank and said never again, his mileage dropped horribly and the power was nonexistent.

3 out of 3 people think this is helpful.
8,395

If your vehicle is rated for E85 you can use it, but you are better off switching when the tank is almost empty. You will lose 15-20% fuel economy, so if the E85 isn't that much cheaper then stick with regular gasoline. If your car is not rated for E85 then putting it in will turn on a bunch of emissions and warning lights.

4 out of 4 people think this is helpful.

I having problem with the gas mileage

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