Kia Optima 2004 Owner's Manual page 207

Using the hot fluid scale:
HOT
EMSA7011
If the vehicle has been driven and the
fluid is warmed to the normal operating
temperature of approximately 158~176ºF
(70~80ºC), the fluid level should be
within "HOT" range.
• Use the cold scale as a rough
reference only.
• If the outside temperature is lower
than 68ºF (20ºC), start the engine
and measure the fluid level after
letting the engine reach operating
temperature.
7-22
MAINTENANCE
• If the vehicle has been driven for an
extended period at high speeds or in
city traffic in hot weather, it is
usually best to measure the fluid level
after stopping the engine and
allowing the fluid to cool for 30
minutes.
When inserting the dipstick, be sure to
insert it completely. When adding fluid,
measure frequently with the dipstick to
make sure the fluid level does not go
above the Full position. Do not overfill.
Use only the specified automatic
transaxle fluid. (Refer to "Recomm-
ended Lubricants" later in this section.)