Here are the general steps on how to fill gearbox oil in a 1991 Nissan Terrano:
1. Gather Materials:
- Gearbox oil of the recommended type and quantity (Check your vehicle's owner's manual).
- Oil filter wrench (if applicable).
- Funnel.
- Rags to clean any spills.
2. Locate the Gearbox Oil Fill Plug and Drain Plug:
- The gearbox oil fill plug and drain plug are typically located on the side or bottom of the gearbox housing.
- Some models may also have a separate filler and drain hole.
3. Drain the Old Gearbox Oil:
- Place an oil pan beneath the gearbox oil drain plug.
- Loosen and remove the drain plug using an appropriate wrench.
- Allow the old oil to drain completely into the pan.
4. Replace the Gearbox Oil Filter (if applicable):
- Some models may have a replaceable gearbox oil filter. If so, remove the old oil filter and replace it with a new one.
5. Close the Gearbox Oil Drain Plug:
- Once all of the old oil has drained, reinstall the gearbox oil drain plug. Tighten it securely.
6. Add New Gearbox Oil:
- Use a funnel to add the recommended amount of gearbox oil to the fill plug hole.
- Check the gearbox oil level using the dipstick (if applicable) or by referring to the owner's manual for instructions.
7. Check for Leaks:
- Start the engine and let it run for a few minutes. Check for any leaks around the gearbox oil fill plug and drain plug.
8. Test Drive:
- After filling the gearbox with oil, take the vehicle for a short test drive. Check for any unusual sounds or performance issues related to the gearbox.
Safety Precaution: Gearbox oil can be hot, so be cautious while draining or filling the oil. Always use protective gloves and avoid direct contact with the oil.
