1. To check the oil level, lift the vehicle and support it securely. The car must be level. On the side of the transmission housing there is an inspection hole with a plug screwed into it. Drain hole (also with a cork) is located at the bottom of the transmission housing (figure 17.1). Unscrew the inspection hole plug. If there is a normal amount of oil in the transmission, its level should be at the lower edge of the inspection hole. Usually, after unscrewing the plug, a small amount of oil flows out of the hole. This means that the oil level is normal. If the oil does not flow out after unscrewing the plug, feel the oil level with your finger.
2. If there is not enough oil in the transmission (i.e. if its level is below the edge of the hole), add the required amount into the same hole. Pouring oil into the side hole, especially in a limited space, is quite difficult. Therefore, make an adapter from hoses of a suitable size for a funnel that can be placed outside the body (fig. 17.2, a, b). Pour oil into the transmission until it starts to flow out of the check hole.
3. Screw in the plug and tighten it securely. Take the vehicle for a short drive and check for leaks.