How TO CHANGE THE TRANS FLUID and filter on 2004 KIA OPTIMA

Park the Optima on a flat surface and raise the front end up on a pair of jack stands. Wait about 30 minutes for the engine to cool before you go underneath the vehicle. Slide underneath the engine and locate the transmission drain pan in the center of the vehicle. This is a large, metal tank surrounded by six bolts. Place a collection pan beneath the drain pan.Remove all but one of the bolts surrounding the drain pan with the 1/2 inch socket wrench. Allow 10 to 15 minutes for the majority of the fluid to drain from the pan. Hold onto the drain pan and remove the final bolt. Tilt the remaining fluid slowly into the collection pan below. Wash out the drain pan and bolts with soap and water to remove the fluid residue.Remove the three bolts attaching the transmission filter below the drain pan. Place the new filter on the transmission and attach the old bolts. Replace the drain pan and lower the car from the jack stands.Open the hood of the car and locate the yellow transmission dipstick above the drain pan. Pull it out and place a funnel into the tube. Pour in three quarts of transmission fluid. Replace the dipstick and close the hood.

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Do not over fill the trans fluid otherwise it will be complete mess to clear it up, it will cause all types of gear slipping and gear shifting problem.