Learn More About E15 Fuel - Iowa Renewable Fuels Association

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FAQ’s

Unleaded 88/E15 Frequently Asked Questions

What is Unleaded 88/E15?

E15 is a blend of 15% ethanol and 85% gasoline.  It contains 5% more ethanol than E10, which is the most common fuel used in the U.S. E15 is higher in octane – typically 88 octane while E10 has an octane rating of 87. Retailers are offering E15 as Unleaded 88 to highlight its high octane value.

Can I use Unleaded 88 in my vehicle?

Unleaded 88 can be used in all 2001 & newer cars, trucks and SUVs. These model years represent more than 90% of vehicles on the road today. It’s the most tested fuel in history and has no effect on vehicle drivability. To date, more than 20 BILLION miles have been driven using Unleaded 88, and that number continues to grow.

What type of mileage will I get when using Unleaded 88?

There is no noticeable difference between the mileage achieved when using Unleaded 88 and the mileage when operating on E10.

What is the price of Unleaded 88?

Unleaded 88 is the lowest-cost fuel available for 2001 & newer vehicles, typically selling for 5 – 10 cents a gallon less than E10. The price difference between Unleaded 88 and conventional gasoline without ethanol is around 40 cents.

Can I use Unleaded 88/E15 in my lawnmower or other small engine equipment?

Unleaded 88 has not been approved by EPA for use in non-automotive engines like boats, motorcycles, lawn mowers and other small or off-road engines because it wasn’t tested. E10, however, is approved for every on-road and off-road engine.

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