21.1 Plugs of the control (top) and drain (bottom) holes of the transfer case
22.2 Check (top) and drain (bottom) plugs in the front differential housing
3. The oil level should reach the lower edge of the hole (photo). If necessary, add oil using a bulb or syringe. On cars with a limited-slip differential, there is a plate on the gearbox housing indicating the recommended oil grade.
4. Screw in the plug and tighten to the specified torque.
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