Note: Refer to your vehicle's owner's manual for specific instructions.
1. Park the car on a level surface and turn off the engine.
2. Apply the parking brake.
3. Locate the oil fill plug on the transmission. On a 2006 Toyota Belta, it is usually located on the passenger side of the transmission, near the bottom. It will have a "T" or "Trans" marking on it.
4. Clean the area around the oil fill plug to prevent dirt from entering the transmission.
5. Remove the oil fill plug. Use a wrench or socket to loosen and remove the plug.
6. Check the oil level. Gear oil should be at the bottom of the oil fill hole, right at the level indicator.
7. Add gear oil if necessary. If the oil is low, add gear oil of the recommended type and viscosity through the fill hole until it reaches the level indicator.
8. Replace the oil fill plug. Tighten the plug until it is snug.
9. Dispose of any used gear oil properly.
10. Check for leaks. Start the engine and let it run for a few minutes. Look underneath the car for any leaks from the transmission. If you see any leaks, tighten the fill plug or take your car to a mechanic.
