See also:

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 ...

IS BIGGER BETTER?
While we’d certainly argue that when it comes to cars bigger isn’t always better, the wider and longer Optima is now in line with its main competitors delivering added interior space. Rear sea ...

LUXURIOUS CLASS-EXCLUSIVE FEATURES
Upgrading to the Premium Package (as with our test car) adds items like wood interior trim, heated rear seats, a driver’s memory seat with 4-way adjustability, and class-exclusive features like ...