Some maintenance actions such as changing the engine oil might seem evident and essential, although others such as changing the gearbox oil from its Mercury Grand Marquis may seem to be less natural. However, produce no mistake, changing the gearbox is just as important as changing the engine oil. This content page will describe the purpose of the gearbox oil, then, why it is essential to change the gearbox of your Mercury Grand Marquis, and finally, how to change the gearbox oil of a Mercury Grand Marquis .

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Purpose of gearbox oil on a Mercury Grand Marquis

So we begin our content page with the purpose of gearbox oil on a Mercury Grand Marquis. The objective of this short introduction is to produce you understand the benefit of this fluid which assures the good working of your motor vehicle. The gearbox of your car has the objective to demultiply the power transmitted by the engine and send it back to your wheels . It is made 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 highly lubricate to function properly, 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 performing of the gearbox.

Why changing the gearbox oil from a Mercury Grand Marquis?

Now we’ll see what’s the point of draining the gearbox oil of your Mercury Grand Marquis?

Interest of gearbox oil changing Mercury Grand Marquis

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

  • With time, the oil will lose its viscosity due to friction and temperature rise, which will lead to less lubrication of the gears and pinions and therefore risk to break some of them.
  • Same as viscosity, time and temperature rise will lower 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 always have a quality oil, a gearbox is an element that wears out and releases 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 Mercury Grand Marquis?

Whether you want to do an automatic or manual gearbox oil change on Mercury Grand Marquis or strong> the procedure is not similar, nevertheless, dealers do not give mileage recommendations to change the oil in your gearbox, nevertheless when you do an intervention on the gearbox it is beneficial to change it, in any other case here are the causes to produce you think about doing this oil change.

Oil change for manual gearbox Mercury Grand Marquis

  • Gears are jumping: you are probably missing oil and you may have a gearbox oil leak, please see our content page on gearbox leaks on Mercury Grand Marquis for more information.
  • The gearbox cracks when you switch gears: The oil has certainly lost viscosity and is too fluid, so the gears get stuck.
  • Difficulty to shift gears: Same problem as just before, the oil is most certainly too fluid.

Automatic gearbox oil change

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

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How to change gearbox oil of a Mercury Grand Marquis?

At last, to finish this content page, we will describe you how to empty the gearbox oil of your Mercury Grand Marquis , it’s much easier than you might believe, here are the few guidelines to follow to do it properly:

  • Heat your Mercury Grand Marquis 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 gather 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

In the event that you have any further questions about the Mercury Grand Marquis, do not hesitate to consult our Mercury Grand Marquis category.