See also:

Air cleaner
Filter replacement It must be replaced when necessary, and should not be cleaned and reused. Replace the filter according to the Maintenance Schedule. If the vehicle is operated in extremely d ...

Automatic transaxle
Checking the automatic transaxle fluid level The automatic transaxle fluid level should be checked regularly. Keep the vehicle on the level ground with the parking brake applied and check the ...

Impressive Warranty
Hyundai is Kia's corporate parent, so the Optima gets Hyundai's impressive warranty; it includes 10-year/100,000-mile powertrain protection and 5-year/60,000-mile roadside assistance. Kia is put ...