Happy new year to everyone!
Here is some pictures and instructions for the TC transmission to check trans fluid .
1. Start the engine and slowly select each gear position, stopping in each position and allowing the transmission to engage.
2. With the engine running in PARK on a level hoist make sure the transmission is at normal operating temperature 85-93° C (185-200° F). Check if the transmission fluid is even with the oil leveling plug hole.
3. If the transmission fluid is not even with the oil leveling plug hole, add clean transmission fluid in increments of 0.25L (0.5 pt) until the transmission fluid is even with the oil leveling plug hole.
Material : Motorcraft® MERCON® LV Automatic Transmission Fluid / XT-10-QLVC (WSS-M2C938-A) (MERCON® Lx
I checked on my TC and i can confirm there is filler plug similar to the one on the picture shows next to the air filter.
this maybe helpful to those who has access to a lift to check trans fluid level.