Hyundai Elantra HD: Gasoline containing alcohol and methanol - Gasoline engine - Fuel requirements - Introduction - Hyundai Elantra HD 2006–2010 Owners ManualHyundai Elantra HD: Gasoline containing alcohol and methanol

Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed along with or instead of leaded or unleaded gasoline.

Do not use gasohol containing more than 10% ethanol, and do not use gasoline or gasohol containing any methanol. Either of these fuels may cause drivability problems and damage to the fuel system. Discontinue using gasohol of any kind if drivability problems occur.

Vehicle damage or driveability problems may not be covered by the manufacturer’s warranty if they result from the use of:

1. Gasohol containing more than 10% ethanol.
2. Gasoline or gasohol containing methanol.
3. Leaded fuel or leaded gasohol.

"E85" fuel is an alternative fuel comprised of 85 percent ethanol and 15 percent gasoline, and is manufactured exclusively for use in Flexible Fuel Vehicles. “E85” is not compatible with your vehicle. Use of “E85” may result in poor engine performance and damage to your vehicle's engine and fuel system. Hyundai recommends that customers do not use fuel with an ethanol content exceeding 10 percent.

CAUTION CAUTION

Your New Vehicle Limited Warranty does not cover damage to the fuel system or any performance problems caused by the use of “E85” fuel.

CAUTION CAUTION

Never use gasohol which contains methanol. Discontinue use of any gasohol product which impairs drivability.

Unleaded
Your new vehicle is designed to use only unleaded fuel having a pump octane number ((R+M)/2) of 87 or highter. Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as we ...

Use of MTBE
We recommend that fuels containing MTBE (Methyl Tertiary Butyl Ether) over 15.0% vol. (Oxygen Content 2.7% weight) should not be used in your vehicle. Fuel containing MTBE over 15.0% vol. (Oxygen C ...