Use of MTBE
HYUNDAI recommends avoiding fuels containing MTBE (Methyl Tertiary Butyl Ether) over 15.0% vol. (Oxygen Content 2.7% weight) in your vehicle.
Fuel containing MTBE over 15.0% vol. (Oxygen Content 2.7% weight) may reduce vehicle performance and produce vapor lock or hard starting.
CAUTION
Your New Vehicle Limited Warranty may not cover damage to the fuel system and any performance problems that are caused by the use of fuels containing methanol or fuels containing MTBE (Methyl Tertiary Butyl Ether) over 15.0% vol. (Oxygen Content 2.7% weight.)
See also:
Brake Fluid
Check brake fluid level in the brake fluid reservoir. The level should be between
"MIN" and "MAX" marks on the side of the reservoir. ...
SAFETY
The 2011 Sonata has been named a Top Safety Pick by the Insurance Institute
for Highway Safety. To earn this safety nod, a car must receive the top score of
Good in front-, side-impact, rear and r ...
Engine coolant
The high-pressure cooling system has a reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the factory.
Check the antifreeze protection and coolant level at least once a ...


