Some maintenance actions such as changing the engine unit oil might seem obvious and very important, while others such as changing the gearbox oil from its Volkswagen Passat may seem less natural. However, produce no mistake, changing the gearbox is just as necessary as changing the engine unit oil. This content will describe the function of the gearbox oil, then, why it is important to replace the gearbox of your Volkswagen Passat, and at last, how to replace the gearbox oil of a Volkswagen Passat .

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Function of gearbox oil on a Volkswagen Passat

So we start our content with the function of gearbox oil on a Volkswagen Passat. The objective of this short introduction is to produce you understand the benefit of this fluid which ensures the good performing of your car. The gearbox of your car has the mission to demultiply the power transmitted by the engine unit and send it back to your wheels . It is done up of pinions and gears that will allow the wheels to rotate at different speeds depending on the curves and the gear engaged. It will work with the help of an axle and a differential. All these parts will need to be strongly lubricate to function properly, limit friction and tolerate the high temperatures produced by the engine unit and friction. Your transmission oil has a high viscosity and will prevent the formation of filings or gear breakage, so it is fundamental to the proper working of the gearbox.

Why changing the gearbox oil from a Volkswagen Passat?

Now we’ll find out what’s the point of draining the gearbox oil of your Volkswagen Passat?

Interest of gearbox oil changing Volkswagen Passat

There are some interests to replace the gearbox of your car repeatedly, we will list them and outline them below:

  • After a while, the oil will lose its viscosity because of friction and temperature rise, which will result in less lubrication of the gears and pinions and therefore risk to break some of them.
  • Same as viscosity, time and temperature rise will reduce the oil resistance to the engine unit temperature, So it will fluidize much more easily when the engine heats up, which is not good for your gearbox.
  • Accumulation of metallic residues: Finally, even if you always have a quality oil, a gearbox is an element that wears out and generates iron filings with friction, the oil will pick them up and if it builds up too much these residues can get into gears and break them.

When to do the gearbox oil replace on a Volkswagen Passat?

Whether you want to do an automatic or manual gearbox oil change on Volkswagen Passat or strong> the process is not similar, however, dealers do not give mileage suggestions to replace the oil in your gearbox, however when you do an intervention on the gearbox it is wise to replace it, otherwise here are the reasons to produce you take into consideration doing this oil replace.

Oil replace for manual gearbox Volkswagen Passat

  • Gears are jumping: you are probably missing oil and you might have a gearbox oil leak, please find out our content page on gearbox leaks on Volkswagen Passat for more info.
  • The gearbox cracks when you change gears: The oil has undoubtedly lost viscosity and is too fluid, so the gears get stuck.
  • Difficulty to shift gears: Same issue as just before, the oil is most certainly too fluid.

Automatic gearbox oil replace

  • A slow start from the neutral position to the first one: generally a viscosity issue.
  • Difficulty or even impossibility to shift gears: Lack of oil

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How to replace gearbox oil of a Volkswagen Passat?

At last, to conclude this content page, we will describe you how to empty the gearbox oil of your Volkswagen Passat , it’s easier than you might presume, here are the few actions to follow to do it properly:

  • Heat your Volkswagen Passat for about 10 minutes to get a fluid oil, place it flat on 4 stands.
  • Install a drain pan under the drain plug, open it, and clean it well because it will probably collect filings.
  • Let all the oil run out until it’s all gone.
  • Replace and tighten the cap, then fill with a syringe through the filler cap with the manufacturer’s suggested dose

If perhaps you have any additional questions about the Volkswagen Passat, do not hesitate to consult our Volkswagen Passat category.