Ford 2003 Mustang Workshop Manual page 2307

CAUTION: The use of any other type of transmission fluid than specified could result in
transmission failure.
If fluid needs to be added, add fluid in 0.25L (1/2 pint) increments through the filler tube. Do not overfill
the fluid. For fluid type, refer to the specification chart.
Fluid Condition Check
1. Check the fluid level.
2. Observe the color and the odor. The color under normal circumstances should be dark reddish,
not brown or black or have a burnt odor.
3. Hold the fluid level indicator over a white facial tissue and allow the fluid to drip onto the facial
tissue and examine the stain.
4. If evidence of solid material is found, the transmission fluid pan should be removed for further
inspection.
5. If the stain is a foamy pink color this may indicate coolant in the transmission. The engine
cooling system should also be inspected at this time.
6. If fluid contamination or transmission failure is confirmed by the sediment in the bottom of the
fluid pan, the transmission must be disassembled and completely cleaned. This includes the
torque converter and cooler tubes. The oil-to-air cooler will need to be installed.
7. Carry out diagnostic checks and adjustments. Refer to Diagnosis By Symptom in this section.