What oil to fill in the gearbox?

Car oil plays an important role in the work of almost all systems. With its lack or complete absence, the details of the mechanisms during constant friction begin to be eager and come into disrepair. Therefore, it is necessary to monitor the level of the fluid and on time to replace it.

Each motorist knows that the gearbox consists of several shafts with gears rotating on bearings and constantly rubbed.

In working condition, high pressure is created in the checkp, its internal parts are in constant motion. Due to this, the transmission oil over time is produced, in contact with the details, the oil film is destroyed and for this reason the metal elements are seized.

Characteristics of transmission oils

To prevent consequences of mechanical processes of friction and adverse external influence, there is viscous oil with special special services. Its distinctive feature is that the oil film has a sensitivity to different kinds of influences and is last saved.

In the composition of transmission oils similar to motor lubricants. They contain similar components that prevent the formation of rust and rapid wear of parts, only the proportions are taken by others.

The transmission fluid consists of chemical components, such as phosphorus, chlorine, sulfur, zinc that strengthen and make a stronger oil film. Due to this, it is better to withstand mechanical impacts and increased pressure.

Varieties of oil bases

Transmission oil is divided into three types based on:

• mineral;
• synthetic;
• semi-synthetic.

What kind of choose, to solve you, the main thing is not to be mistaken and not mix the "synthetics" with mineralka. "

Oil on synthetic basis

If compared with mineral oil oil, the synthetic has better fluid flow, which is very favorable at low air temperatures on the total operation of the car.

If we take into account the limit drops of operating temperatures, liquid leaks can be observed through the glands. But, as a rule, such trouble most often found in vehicles with experience.

The main advantage of the synthetic base is the possibility of its use in a wide temperature range, so it is still considered all-season.

Semi-synthetic oil

This type of oil is somewhat medium between mineral and synthetic. According to its properties, it is much better "mineral water", and at the cost of the order of cheaper "synthetics".

Mineral base oil

Mineral oil is in high demand. It received its popularity due to its low cost.

Manufacturers are trying to increase its quality by adding the sulfur content in large quantities.

Transmission oils for different types of gearbox

In addition to different basics, transmission oils are characterized by properties. They are divided into two types:

• oil for automatic transmission;
• oil for manual transmission.

Oil for MCPP

All internal parts of the checkpoint require good lubrication, so they must be completely immersed with oil. There are modifications in which complex mechanisms and they are especially loaded, then this lubricant will be not enough. In such situations, the oil under pressure is given a compulsory supply.

The main functions of oil for "mechanics" (MTF marking):

• reduce mechanical loads;
• give metal microparticles and heat.

Oil for automatic transmission

More overestimated requirements are presented for automatic transmission oil and it looks like a hydraulic fluid. The main function of this oil is the transfer of mechanical energy throughout the transmission. In principle, the oil for automatic transmission can be used for mechanical boxes, but it will be much more expensive.

The main functions of the oil for the "machine" (MTF marking):

• lubricates driving parts and mechanisms;
• creates a liquid medium;
• adds smoothness to the work of the mechanisms;
• protects against rust;
• displays heat;
• have a high degree of viscosity;
• prevents foam formation;
• it has a smaller destructive impact on the glands and elastomers;
• racks to oxidizing processes.

The most famous oils for automatic transmission

The difference in transmission oil by viscosity

Oil viscosity is another important characteristic of the transmission fluid. Severe two classification types: SAE and APIs.

1. 1. The API is divided into 7 groups, the most popular is considered GL-4 for moderate loads and GL-5 for high loads.
2. SAE is divided into three groups: all-season, winter and summer.

In the "Transmission oils for certain models of domestic and imported production", you can see the most common transmission fluids, their degree of viscosity and some other characteristics.

Features of the replacement of transmission oil

In modern models of the car with the automatic transmission of the new sample, the oil change is not provided, it is poured for a full operational period. In such gearbox, you will not be able to find out the oil level, since there is no probe. In practice, sometimes there are situations when problems with the box appear and after the diagnosis, the specialists still make the oil replacement even in expensive models.

In conventional car models, the oil change must be made after 80 thousand km. Male, according to average data, this occurs about once every 2 years. Such norms are set for good vehicle operating conditions: good roads, moderate climate, lack of traffic jams, etc.

Also follow the color and smell of oil. If it darkened noticeably and has the smell of Gary, it means it has come to replace it. If you doubt, contact the car service where you will do the diagnosis and change the liquid.

The cost of the transmission fluid has a large range. The most inexpensive oil for manual transmission is in the area of \u200b\u200b100 rubles. The price of oil for the "machine" - 250-1000 rubles: the most inexpensive brand of Chevron ATF, the most expensive - the Motum ATF.