See also:

Lubricant specifications
Recommended lubricants To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality. The correct lubricants also help promote engine efficiency ...

2011 Kia Optima Review
The previous generation Kia Optima was a vehicle struggling to keep up with the times, having emerged on the scene as a lackluster model masquerading as a value proposition, when in reality it was ...

Brake system
Power brakes Your vehicle has power-assisted brakes that adjust automatically through normal usage. In the event that the power-assisted brakes lose power because of a stalled engine or some oth ...