Some maintenance actions such as changing the engine unit oil may seem obvious and fundamental, while others such as changing the gearbox oil from its Subaru Forester may seem less automatic. However, make no mistake, changing the gearbox is just as essential as changing the engine unit oil. This guideline will explain the function of the gearbox oil, then, why it is necessary to change the gearbox of your Subaru Forester, and at last, how to change the gearbox oil of a Subaru Forester .
Function of gearbox oil on a Subaru Forester
So we start our guideline with the function of gearbox oil on a Subaru Forester. The objective of this short introduction is to make you understand the benefit of this fluid which guarantees the good performance of your motor vehicle. The gearbox of your car has the objective to demultiply the power transferred 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 operate with the help of an axle and a differential. All these parts will need to be highly lubricate to function correctly, limit friction and tolerate the high temperatures generated 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 important to the proper performing of the gearbox.
Why replacing the gearbox oil from a Subaru Forester?
Now we’ll discover what’s the point of draining the gearbox oil of your Subaru Forester?
Interest of gearbox oil changing Subaru Forester
There are some concerns to change the gearbox of your motor vehicle repeatedly, 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 decrease 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, regardless if you constantly 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 accumulates too much these residues can get into gears and break them.
When to do the gearbox oil change on a Subaru Forester?
If you want to do an automatic or manual gearbox oil change on Subaru Forester or strong> the process is not similar, 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 advisable to change it, otherwise here are the causes to make you think about doing this oil change.
Oil change for manual gearbox Subaru Forester
- Gears are jumping: you are most certainly missing oil and you may possibly have a gearbox oil leak, please discover our article on gearbox leaks on Subaru Forester for more info.
- The gearbox cracks when you switch gears: The oil has absolutely 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 change
- A slow start from the neutral position to the first one: quite often a viscosity issue.
- Difficulty or even impossibility to shift gears: Lack of oil
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How to change gearbox oil of a Subaru Forester?
At last, to conclude this article, we will explain you how to empty the gearbox oil of your Subaru Forester , it’s easier than you might think, here are the few steps to follow to do it correctly:
- Heat your Subaru Forester 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 most certainly 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 recommended dose
If you want more guides on the Subaru Forester, go to our Subaru Forester category.
