Some routine service actions such as changing the engine unit oil might seem evident and very important, while others such as changing the gearbox oil from its Subaru Legacy may appear to be less automatic. However, produce no mistake, changing the gearbox is just as important as changing the engine unit oil. This guideline will describe the purpose of the gearbox oil, then, why it is important to replace the gearbox of your Subaru Legacy, and finally, how to replace the gearbox oil of a Subaru Legacy .
Purpose of gearbox oil on a Subaru Legacy
So we start our guideline with the purpose of gearbox oil on a Subaru Legacy. The objective of this short introduction is to produce you understand the interest of this fluid which ensures the good performing of your motor vehicle. 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 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 parts will need to be highly lubricate to action accurately, 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 essential to the proper working of the gearbox.
Why changing the gearbox oil from a Subaru Legacy?
Now we’ll discover what’s the point of draining the gearbox oil of your Subaru Legacy?
Interest of gearbox oil changing Subaru Legacy
There are several concerns to replace the gearbox of your motor vehicle frequently, we will list them and outline them below:
- After a while, the oil will lose its viscosity due to 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 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, 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 gathers up too much these residues can get into gears and break them.
When to do the gearbox oil replace on a Subaru Legacy?
Whether you want to do an automatic or manual gearbox oil change on Subaru Legacy or strong> the procedure is not the same, however, dealers do not give mileage recommendations to replace the oil in your gearbox, on the other hand when you do an intervention on the gearbox it is beneficial to replace it, in any other case here are the factors to produce you take into consideration doing this oil replace.
Oil replace for manual gearbox Subaru Legacy
- Gears are jumping: you are most certainly missing oil and you might have a gearbox oil leak, please discover our content page on gearbox leaks on Subaru Legacy for more information.
- The gearbox cracks when you change 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 obviously too fluid.
Automatic gearbox oil replace
- 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 replace gearbox oil of a Subaru Legacy?
At last, to end this content page, we will describe you how to empty the gearbox oil of your Subaru Legacy , it’s much easier than you might believe, here are the few guidelines to follow to do it accurately:
- Heat your Subaru Legacy 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.
- Change and tighten the cap, then fill with a syringe through the filler cap with the manufacturer’s suggested dose
To get more tips on the Subaru Legacy, take a look at the Subaru Legacy category.
