Oil in the gearbox, why oil foams.

The gearbox can regularly work if there is oil in it. Motorists know that they are obliged to monitor the oil level in the gearbox. But one day, they get the dipstick and detect small bubbles on it. The motorist understands that the oil began to foam, why?

Content

Foaming oil, a signal that in the gearbox has a malfunction and this malfunction can be dangerous.

Foaming oil, causes elevated wear of the inner parts of the gearbox, as air bubbles, namely they cause foaming of oil, do not properly lubricate the inner parts of the gearbox. As a result, the gearbox gets overheating, the driver experiences difficulties when switching gear. The result may be the failure of control electronics. There may be an extremely negative situation that will lead to a breakdown of the entire node. The car enthusiast must understand why oil is foaming in the gearbox and how to eliminate this cause.

Is it possible to mix different types of gearboxes

Since the car is a source of danger on the roads, during the maintenance of the car you can not mix different liquids.

Economical owners expose their lives and the lives of other people to great risk.

No need to put chemical experiments, mixing various types of oil. Manufacturers produce different oil oils and even the same oil names, if it is made by different firms, does not guarantee that the oil makeup is completely identical.

A mixture of two different oils can cause a chemical reaction between additives and various components of lubricants.

The liquid obtained as a result of mixing can lose all its properties and the components of the gearbox will be destroyed very quickly.

If it is flooded by poor-quality oil, what to do?

Output one, merge poor-quality liquid and pour new quality oil.

But, since the oil is a damaging liquid, in some places it can occur stagnation, droplets will remain and lower from poor-quality fluid, in order to avoid the occurrence of a new chemical reaction, it is necessary to thoroughly rinse with a special flushing fluid.

High-quality flushing will remove all active chemical compounds.

The best option is to appeal to the maintenance station (STR).

But such a procedure can be done with your own hands as described below.

Wash gearbox with their own hands

Before starting work, the car owner must prepare a five liter plastic bottle.

In the lid of the five liter bottle, it is necessary to have a nipple from the ordinary tire.

At the bottom of the five liter bottle, you need to have a fitting.

The inlet hose from the gearbox is connected to the piece, the flushing fluid is poured into the container, it is closed with a nipple and nipple with a compressor.

Next, you need to unscrew the output hose from the checkpoint and the end of the hose is put into the container, quite volumetric.

Now you need to turn on the compressor and follow the flowing fluid from the outlet hose.

When a clean flushing fluid starts up from the hose without splashes of the old oil - the work on the washing is completed.

Attention! If the filter is installed at the gear input, it is necessary to remove it before washing and install a new filter before filling the new oil.

What level of oil is considered correct

Practice shows that in an automatic transmission, most often the oil is frozen when it is flooded above the norm.

Many owners of cars, following the instructions of "experienced" mechanics, overflow the oil above the norm.

But each car, has its own characteristics and not all tips are suitable for all car brands.

Very negatively on overflowing oil in the gearbox reacting machines released Volkswagen, Toyota, BMW, Mercedes.

Overflow oil into the gearbox of the above cars, can lead to valve breakdown, to the rupture of rubber gaskets and to break the friction.

To properly check the level of Mala, the motorist must examine the instructions of its machine and find the instructions on the method of performing this procedure and at what temperature the oil level is checked.

In the classic version of the oil level check, it is recommended to drive five kilometers, stop the car, wait two, three minutes while the foam is asced, remove the dipstick, wipe it dry and insert again.

After that, once again remove the probe and you will see the true oil level in the gearbox.

If the probe shows an excess level - oil needs to merge to normal. In addition to overflow, the oil can foam and due to being noticeable.

This problem concerns both an automatic gearbox and mechanics.

Check the oil level, will have to be described above.

If there are few oils, it must be addressed, it may be disconnected by breaking the gearbox.

Is oil foaming due to air

Yes, the oil can foam in the gearbox, due to the fact that a large amount of air falls into the gearbox and the air gradually replaces the oil. Such a case can occur when damaged the housing of the node or the bursting of the hose, or the appearance of cracks and slopes.

All damage must be immediately eliminated, it is impossible to ride such faults, as the quality of lubrication of rubbing parts will dramatically decrease through each kilometer of the path.

By visual inspection, pay attention to the transmission places that may be damaged:

lower part of the housing;
on the stove that connects the gearbox and the engine;
it is necessary to inspect all hoses, gaskets, glazes;

If the cause of damage is detected, it must be eliminated and replaced with the oil in the gearbox.

If the machine, in its design, the CAT system has a cooling system of a two-circuit radiator, in the radiator can be flowing and mixing the technical fluid of the radiator with a gearbox can form a foam.

Such a breakdown is eliminated immediately, otherwise not only the gearbox will fly, but also the engine.

By eliminating this reason, you should rinse the gearbox and completely replace the oil.

The cause of foaming of oil, due to the exceeding the life of the oil

If the oil is used above, the term is specified in the technical specifications of cars., Oil loses its properties and may appear foam.

Experts recommend changing oil in the checkpoint:

Automatic transmission, mineral oil - after 20,000-30,000 km;
Automatic transmission, synthetic oil - after 50,000 km;
manual box, mineral oil - 30,000 km;
mechanical box, synthetic oil - after 70,000 km;
variator, synthetic oil - 30,000 km.

The oil can foam due to overheating of the oil, with too active driving, in the machine with automatic transmission, in this case, the light bulb will light up on the dashboard, and in the machines with the MCPP, the driver's intuition should work.

Practice shows that if the car is used in the city and it often stands in traffic jams, or it is chased by off-road at elevated loads - the oil must be changed one and a half times more often.