Kia Optima: Use of MTBE
Kia 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.)
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 leade ...
Do not use methanol
Fuels containing methanol (wood alcohol) should not be used in your vehicle.
This type of fuel can reduce vehicle performance and damage components of the fuel
system. ...
See also:
Active eco system
Active ECO operation
Active ECO helps improve fuel efficiency by controlling the engine and transaxle.
But fuel-efficiency can be changed by the driver's driving habits and road conditions.
...
Removal
1.
Remove the radiator grill upper
cover.(Refer to the BD group - "Front bumper")
2.
Remove the mounting nut and disconnect
the horn connector (B), then ...
Checking the brake/clutch* fluid
level
Check the fluid level in the reservoir periodically.
The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap and
adding brake/c ...