Some routine service actions such as changing the engine oil may seem obvious and important, while others such as changing the gearbox oil from its Bmw 1 series may appear to be less natural. However, make no mistake, changing the gearbox is just as important as changing the engine oil. This guideline will explain the function of the gearbox oil, then, why it is vital to change the gearbox of your Bmw 1 series, and at last, how to change the gearbox oil of a Bmw 1 series .

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Function of gearbox oil on a Bmw 1 series

So we start our guideline with the function of gearbox oil on a Bmw 1 series. The objective of this short introduction is to make you understand the interest of this fluid which assures the good performing of your motor vehicle. The gearbox of your car has the mission to demultiply the power transferred by the engine 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 function with the help of an axle and a differential. All these auto parts will need to be strongly lubricate to function accurately, limit friction and tolerate the high temperatures produced by the engine and friction. Your transmission oil has a high viscosity and will prevent the formation of filings or gear breakage, so it is important to the proper functioning of the gearbox.

Why replacing the gearbox oil from a Bmw 1 series?

Now we’ll find out what’s the point of draining the gearbox oil of your Bmw 1 series?

Interest of gearbox oil changing Bmw 1 series

There are some interests to change the gearbox of your motor vehicle frequently, we will list them and detail them below:

  • As time passes, the oil will lose its viscosity due to friction and temperature rise, which will cause less lubrication of the gears and pinions and therefore risk to break some of them.
  • Same as viscosity, time and temperature rise will decrease the oil resistance to the engine 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 constantly have a quality oil, a gearbox is an component that wears out and creates iron filings with friction, the oil will pick them up and if it accumulates too much these residues can get into gears and break them.

When to do the gearbox oil change on a Bmw 1 series?

If you want to do an automatic or manual gearbox oil change on Bmw 1 series or strong> the process is not the same, nevertheless, dealers do not give mileage suggestions to change the oil in your gearbox, nevertheless when you do an intervention on the gearbox it is wise to change it, in any other case here are the factors to make you take into consideration doing this oil change.

Oil change for manual gearbox Bmw 1 series

  • Gears are jumping: you are probably missing oil and you may have a gearbox oil leak, please find out our content on gearbox leaks on Bmw 1 series 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 problem as just before, the oil is undoubtedly too fluid.

Automatic gearbox oil change

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

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How to change gearbox oil of a Bmw 1 series?

At last, to end this content, we will explain you how to empty the gearbox oil of your Bmw 1 series , it’s less difficult than you might think, here are the few steps to stick to to do it accurately:

  • Heat your Bmw 1 series 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.
  • Change and tighten the cap, then fill with a syringe through the filler cap with the manufacturer’s suggested dose

Whenever you have any additional questions about the Bmw 1 series, do not hesitate to consult our Bmw 1 series category.