1. Park your vehicle on a level surface and apply the parking brake.
2. Locate the transmission fill plug. It is usually found on the side of the transmission housing, near the top. On some models, it may be necessary to remove a plastic cover to access the fill plug.
3. Clean the area around the fill plug to prevent dirt from entering the transmission.
4. Use a socket wrench or allen wrench to remove the fill plug.
5. Insert a funnel into the fill hole and slowly pour in the recommended amount of gear oil. The exact amount of gear oil required may vary depending on the model, so be sure to refer to your vehicle's owner's manual.
6. Once the recommended amount of gear oil has been added, reinstall the fill plug and tighten it securely.
7. Start your vehicle and let it run for a few minutes to circulate the new gear oil.
By following these steps, you can safely add gear oil to the manual transmission on your 1996 Mercury Tracer Trio 1.9.
