Crucially, there's no single "oil" fill point for the transmission in a Tempo. The type of transmission dictates the process:
* If it's a three-speed automatic: The fluid is typically checked and added via a dipstick located on the transmission itself. The dipstick will be clearly marked, often with "ATF" (Automatic Transmission Fluid). Refer to your owner's manual for the specific location. Adding fluid directly to the transmission is usually not recommended unless it is very low and you have an idea of how much to add.
* If it's a CVT: CVTs use a special type of fluid. Finding the fill point requires consulting your owner's manual *and possibly a repair manual*. CVTs are more complex and often require a mechanic to service them properly.
Do not attempt to add oil to any part of the transmission without knowing the exact type of transmission and the correct location for adding fluid. Using the wrong fluid or adding fluid to the wrong location can cause severe damage to the transmission.
Your owner's manual is the best resource. It will specify the correct fluid type and location of the dipstick or fill point. If you don't have the manual, you can find a digital version online (sometimes for a fee) or consult a Ford dealership. They might have a diagram showing the transmission type and the fill location.