If everything is clear with motor lubricant,then the question of when to change the oil in the gearbox and whether it should be done at all, for many motorists is still open. It seems that everything is tight there, there is no pollution inside, so there seems to be no need for a replacement. Moreover, some manufacturers claim that the oil they fill in will be sufficient for the entire life of the vehicle.
So whether to change the oil in the gearbox or drive and not worry about it?
The composition of motor and transmission oils include base and additives. On the basis of this, their properties are disclosed, and the additives also improve the work by performing various functions.
In addition to lubricating, gear oils perform another important task: they remove heat from the gears that are engaged.
On average, the temperature in the gearbox is kept atlevel of one hundred and fifty degrees, and in the very gearing reaches and three hundred. With such high loads, the lubricant naturally begins to foam and lose its beneficial qualities. In automatic transmissions, it also plays the role of a working body, transferring torque from the engine to the gears.
If it comes to foam lubrication, the machinejust can not go. In this case, even special radiators designed to cool the liquid will not help. However, the situation is saved by special additives that make up the oil.
Итак, замена может потребоваться именно из-за that additives lose their functionality over time. They cease to reliably protect the rubbing parts, because of which the latter are subject to rapid wear. Foamed oil can be the cause of a top gear teaser.
As a result, the gears start to buzz.And in about fifty kilometers the process of their destruction will begin. Everything will end up jamming the box and it will be impossible to drive. This is typical for front and all-wheel drive. For rear wheel drive vehicles with manual transmissions, the oil does not experience such strong temperature loads. Therefore, it can be used up to twenty thousand kilometers longer than with an automatic transmission. Usually at the time when changing the oil in the gearbox is necessary, the period of changing the oil in the gearbox also applies. The procedure is carried out in order to remove dirt and shavings released during the work of the gears, which go along with the lubricant.
That the mechanism is less worn out and servedlonger, usually by manufacturers, the term is indicated, after how much to change the oil in the gearbox, equal to fifty to sixty thousand mileage, and under extreme conditions, even less - from thirty to forty thousand.
However, there are a number of models in which gear lubricant is poured on for the entire period of operation. In such cases, even a drain plug and level gauge probe is not provided.
Separately, it should be said about the automatic transmission, namelyvariator variants. To understand when to change the oil in an automatic transmission of this type, you need to learn their principle of operation. The fact is that they are not arranged in the same way as a conventional transmission, although they belong to the class of automatic ones. The mode of their functioning is more rigid, therefore special lubrication is required for such boxes. It is recommended to change it once every fifty thousand kilometers, and if usually the ride is intensive, then once every thirty thousand. The periodicity of such a replacement must be strictly followed, since in such conditions the additives lose their properties much faster.
To flush the unit when replacing orNo, just as in the case of engine oil, experts have no consensus. I just want to say that if this is done, it is best to use the same oil that will be poured in the future. Such flushing will be the key to a stable and long-term transmission in the future.
The oil level in the manual transmission is usually checked after a night of idle car. The longer she stood with the engine shut off, the more accurate the results will be to understand when to change the oil in the gearbox.
To do this, rub the crankcase where the drive is locatedspeedometer The bolt is reversed, the fasteners are removed, and then the assembly is removed. The bolt itself is, of course, better to be watered and to be careful not to disrupt the head.
Check is carried out by a driving gear wheel of a speedometer. Slight level overshoot is permissible. But there must be no shortage of it.
If the recommended mileage has passed, andthe time when changing the oil in an automatic transmission or a manual one, and also when checking you came to the conclusion that this must be done urgently, the process starts on a pre-heated engine.
Drainage is performed by unscrewing the plug,located at the base of the crankcase. Its pre-wipe and substitute capacity. After leakage, the thread is wiped, a new washer is put on, and the cork is attached in place.
It should be noted that the automatic transmission to drain the oil completely will not work. However, it will be enough to remove the abrasive from the inside.
It’s important not just to know how often to change the oil ingearbox and follow this, but use exactly the lubricant that fits your car. You need to acquire the liquid, which is prescribed by the car manufacturer. However, if the operating manual is not preserved, then follow the general recommendations.
Oils, both engine and transmission, are mineral, semi-synthetic and synthetic.
Mineral is usually used only in individual trucks and domestic rear wheel drive cars.
Semisynthetics are also shown to our cars and those foreign cars that are operated at low speeds. It is inexpensive and has better performance than mineral water.
Synthetic oils are the most expensivebut they are also equipped with the best package of various additives, the properties of which are stored much longer. Therefore, the period of how much to change the oil in the gearbox, when using synthetics will increase.
For excellent work PPC is better, of course, not to regretmoney for oil and use synthetics. ATF (oil for automatic transmissions) can often be used for mechanics as well: it has better characteristics than those recommended for manual transmissions.
