Where do you put gearbox oil?
Gearbox oil is added through a fill plug located on the side of the gearbox. The fill plug is usually a hex-head bolt, but it can also be a cap or a plug with a dipstick attached. To fill the gearbox, remove the fill plug and insert a funnel. Then, pour the recommended amount of oil into the gearbox until it reaches the full mark on the dipstick. Once the gearbox is filled, replace the fill plug and tighten it securely.