Rear differential (4WD)

Checking or changing rear differential fluid
Have rear differential fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section.

Use only the specified rear differential fluid. (Refer to "Recommended lubricants and capacities" in section 8.)

    See also:

    THE VERDICT
    Kia won’t release pricing for the Optima for another few weeks, but we’re assured it will come in at under $20,000 to start and we expect it to undercut (slightly) the Sonata, which starts at ...

    Trunk
    Outside the vehicle • To open the trunk, insert the key into the lock and turn it to the right (clockwise). • To close the trunk, use both hands to push the trunk lid down. Check to see if ...

    If the engine overheats
    If your temperature gauge indicates overheating, you experience a loss of power, or hear loud pinging or knocking, the engine will probably be too hot. If this happens, you should: 1. Pull off th ...