Self-changing oil in manual transmission

The gearbox consists of a plurality of rotating elements. These are gears and shafts. As in the internal combustion engine, it has its own lubrication system. On mechanical boxes it is slightly different. Here oil does not perform the function of torque transmission. It only "dipped" gears when rotating. However, this does not mean that it does not require replacement. Well, let's consider whether oil change is necessary in the manual transmission, and how to make it yourself.

Is it worth changing at all? About the resource

In the operating instructions, manufacturers often do not regulate the life of this lubricant. According to them, the oil in the box is flooded for the entire service life. However, in fact, the life of the lubricant in the mechanical box is 60 thousand kilometers. At the end of this period, oil begins to rapidly lose its properties. The product changes its own and absorbs all the workings from the gears - the shavings. It then acts as an abrasive, reducing the life of the shafts and teeth.

Untimely replacement of oil in the manual transmission can lead to a rapid failure of the box. It is important not only to comply with the regulations, but also to periodically check its level of balance in the transmission. If the checkpoint "sweats" and has characteristic streaks, the gears will be smeared inadequately. Pay special attention to this when putting the machine on a hoist.

Signs indicating the need to replace

One of the characteristic features is a tight gear shift. If the oil level is below normal or it is completely absent, a characteristic buzz will appear soon after driving. It can appear on one, or at once on all programs.

But in any case, you need to look at the mileage. If this is a newly bought used car, experts recommend immediately to perform this operation. So you exclude the possibility of occurrence of faults associated with the development of the teeth.

How to choose and how much to pour?

As is known, the viscosity of the transmission oil is an order of magnitude higher than that of the motor oil. When choosing a new liquid, follow the manufacturer's recommendations. What viscosity should I choose if I change the oil of manual transmission? "Focus", for example, is operated on a lubricant 75W-90.

Another frequent question is how much should be poured? Here, the opinions of motorists diverge. If this is a Ford Focus oil change, you need to buy 2 liters of fluid. On cars "Nissan" it is necessary to use up to three liters. If the oil is replaced by the KIA Rio, the box is filled to 1.9 liters.

By viscosity, the most optimal option would be 75W-85 of the fourth class by API. As for manufacturers, many trust trusted brands:

• "Castrol".
• "Motul."
• "Mobile-1".
• "ARAL".

Price list

The cost of oils can vary significantly. So, the original product from the company "Ford" with a viscosity of 75W-90 costs 1 thousand rubles per liter. "Honda" produces lubricant in the volume of 4 liters. It can be purchased for 2800 rubles. There are cheaper versatile tools. For example, the product of the company "Mannol" with a viscosity of 75W-90 costs 890 rubles per 4 liters. The manufacturer claims that this is a universal lubricant. It can be used for most modern mechanical boxes.

Tools and accessories

The gearbox is in a hard-to-reach place. Therefore, oil change MKPP ("Opel" this or BMW, it does not matter) should be made on the lift or on the inspection pit. Access to the drain neck can only be obtained from the bottom side.

Also we need a set of hex keys. On Nissan cars, the drain plug is twisted with a "14" key, and the filler neck is "twelve".

And the most important thing is the capacity. Its volume should be at least two liters. You can use an old canister with engine oil (it is designed for 4-5 liters), cutting it "hatch" on the side. Additionally need a syringe. We will get them the remains of oil (because it is very thick).

Getting Started

If the oil is changed to manual gear in cold weather, experts recommend heating the liquid in the box. To do this, you need to drive a few kilometers by car (it's the ride, because the "neutral" gears do not rotate).

After that, we put the car on the pit and start to work. Changing the oil in the manual gearbox starts with draining the old liquid. So, we pick up a set of hex keys and unscrew the stopper. It is located the same way as in the photo below.

Next, substitute an empty container and wait for the old oil to completely merge from the box. Note that the liquid is very viscous. At the end of 10 minutes, even if the transmission is flooded with 1.2 liters, there will be another 20 percent of the lubricant. Therefore, we take a syringe in our hands and forcibly pumped it out of the box.

Next, close the drain hole and go to the hood (remove the car from the lift, if one was used). Now we need to fill the new fluid in the transmission. Find the neck and unscrew it with the same hexagonal key. For convenience, we use a syringe with a hose. So we will not spill some of the grease that will be poured. Watch the oil level.

It should be in the region of the lower edge. After that, we screw the neck and remove the tools. At this stage, the oil change in the MKPP was successfully completed.

According to car enthusiasts, riding on a new lubricant is felt from the first kilometers. Transmissions are turned on effortlessly, the box does not make noise at speeds. However, this happens only if the rules are observed.

In advanced cases, the process of destruction of gears is irreversible. Perhaps the new oil will reduce the noise and wash away the production. However, this will not restore the integrity of the teeth, which worked "on dry". Here, only the replacement of mechanisms or turning operations will change the situation.

Conclusion

So, we found out how to replace the oil in the manual gearbox yourself . As you can see, the process is fairly easy and requires a minimum set of tools. For the future, make a note in the logbook to remember how long it takes to replace the oil.

Timely replacement of lubricant in a mechanical transmission is a guarantee of stable and continuous operation of all its components and components. There are often cases when a mechanical box "lived out" to 600 thousand kilometers without a single repair. But it's better not to experiment.