See also:

Air cleaner
Filter replacement It must be replaced when necessary, and should not be washed. You can clean the filter when inspecting the air cleaner element. Clean the filter by using compressed air. 1 ...

Roomy New Interior
However, the Optima's quiet new interior is more upscale and will accommodate four tall adults, or five in a pinch. Front seats are supportive, and the rear-seat area is impressively roomy—alt ...

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 ...