* Overfilling: This is the most probable cause. Someone may have added too much fluid during a service, or the fluid level may have expanded due to heat and then been forced out as it cooled.
* Internal Pressure: While less common, a significant internal problem within the transmission (like a failing pump or a severely clogged filter) could build up enough pressure to force fluid out through the filler tube. This would usually be accompanied by other symptoms, like slipping gears, harsh shifting, or noises.
* Cracked or Damaged Filler Tube: Although less likely, it's possible the filler tube itself is cracked or damaged, allowing fluid to leak out. This would likely be a slow leak rather than a sudden expulsion of fluid.
* Improper Filler Tube Installation: If the filler tube was recently removed (for a service or repair) and not correctly reinstalled, it could create a seal problem allowing leakage.
What to do:
1. Check the transmission fluid level: This is the first and most important step. If it's overfilled, you need to drain some fluid to bring the level to the proper mark on the dipstick (if your transmission has one, otherwise consult your owner's manual). *Do not simply remove the filler tube.* Removing fluid through the tube is unsafe and can cause a mess.
2. Inspect for leaks: Carefully examine the transmission and surrounding areas for any signs of leaks other than the filler tube.
3. Listen for unusual noises: Pay attention to any unusual noises or shifting problems while the car is running.
4. If you're unsure: Take your Taurus to a qualified mechanic for diagnosis. Attempting to fix a transmission issue yourself could lead to more significant damage and expensive repairs. A mechanic can properly diagnose the root cause of the problem.
