Raise the car in a horizontal position.
Unscrew the plug with a 17 mm hexagon socket.
If the gear oil immediately starts to flow out, then everything is in order with its level.
If not, then you need to stick your finger into the hole and check if the oil reaches the hole: sufficient oil level.
If the shortage is greater, top up with the appropriate gear oil at a gas station or workshop.
Left: this is how the oil filter is unscrewed (2) with a wrench (1). The illustration shows a 4-cylinder engine filter.
Right: 6-cylinder engine oil filter (arrow) located at the front left at the bottom of the engine.
Left: control screw plug (1) a manual gearbox is located in the direction of travel on the right at half the height of the gearbox housing. Drain plug (2) located at the bottom of the gearbox.
Right: The illustration shows the oil filler plug (1) and both drain plugs (2 and 3) in the drive of the rear axle of the all-wheel drive model Audi-100.
Note: Filling with very viscous gear oil by hand using a funnel and a long hose, even when the oil is warm, is a great test of your patience and is therefore not recommended. It is better to use special canisters or a syringe with a built-in hose to add oil.
You don't have to think about changing gear oil anymore. The transmission mechanism is equipped with a reservoir from which possible impurities are caught using a magnet. However, gear oil must meet certain requirements. Audi prescribes the use of oil viscosity grade SAE 75 W-90 with specification G 50 (synthetic oil).
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