See also:

Engine cooling system
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 ...

Stop and Go available for two engines
By the end of 2010, Kia will be offering its fuel-stretching ISG (Intelligent Stop and Go) system as an option on both the 1.7 diesel and 1.6 GDI engine. ISG automatically switches the engine off ...

POWER AND FUEL-ECONOMY ARE UP TO PAR
That description might have you thinking the Optima has all sorts of power. True, the upgraded 2.4-liter four-cylinder gets added power for ’09 with 175hp and 169 ft-lbs of torque, but it’s no ...