Engine oil viscosity table. Test of motor oils

Often decide what motor oil is better, based on a parameter of viscosity. Try to answer questions about it. Why is this figure so important? What classification is used to determine the viscosity of motor oil? Table, which graphically represents different viscosity grades listed in the article will help you make the right choice when buying a lubricant.

What does it need?

It is Clear that the main objective of lubrication is to reduce friction between the machine elements, creating them the film and thus contributing to the preservation of integrity. Extremely important and other functions, for example, enhancing the cooling system and the absorption of emitted chips from parts, dust and dirt.

An Engine can overheat from thermal and mechanical processes occurring in the continuous mode when it is working. Lubricating fluid spreading over the entire mechanism removes from his heat.

Debris that the oil collects in the course of its work, increases the life of the power unit.

Naturally, these tasks will be carried out the better, the higher quality of used lubricating fluid. One of its main useful feature is the viscosity. What it is and how to choose the oil under it, take a closer look.

Chemical composition

Lubricating fluid divided by its chemical composition, mineral, semi-synthetic and synthetic.

Mineral water is obtained by distillation of crude oil and is a natural product. It is cheaper and more often used on used vehicles than on new vehicles.

Synthetic, on the contrary, completely artificial oil. It is the most expensive, as it best retains its beneficial qualities due to the presence of many additives for different purposes, which improve its work.

Polysynthetic obtained by mixing mineral and synthetic bases. This is the best option in terms of price and quality. Of course, to obtain such a product will fail, since its created using high-tech equipment. If some enthusiasts decided on such experiments, then they had to replace the engine.

Recommended

How does the rear bushing front arm and how many it serves?

The Rear bushing front arm – one of the constituent elements of the vehicle chassis. He refers to the guide elements of the suspension together with the levers endures tremendous stress with wheels. However, with this this item, there are many ...

Oil consumption in the engine. Six reasons

It is Hardly possible to find a motorist who would not be worried about the increased oil consumption. It is especially annoying when it happens with another new motor. Here are the most common causes that result in the consumption of oil in the engi...

How does the exhaust system?

The exhaust System is designed to remove combustion products from the engine and output them to the environment. It also must be ensured a reduction in noise pollution to acceptable limits. Like any other complex devices, this system consists of seve...

Having dealt with the chemical composition, you can move on to the most interesting indicator, the fluid capacity of lubricating fluids.

Viscosity — is...

In Addition to the oil base, as mentioned above, an important characteristic is the ability of fluidity of the grease and maintain its consistency, regardless of weather conditions. Temperature changes, especially in recent years, there are very sharp, and if the lubricant fluid is not adapted to these processes, the motor will not be easy. This property, that is, the utility level depending on the temperature, and is the turnover.

The world adopted the classification of motor oils according to viscosity, which reflects separate classes for this characteristic. According to her, there are oil summer and winter.

Winter oils are labeled with the letter " W " which means winter, that is «winter». Temperature range at low rates are particularly important. Thanks to him, provided the safe operation of the vehicle in the cold season.

Hot weather, as a rule, oil is transferred without problems.

It should be noted that in recent years the so-called multigrade lubricating fluids. They are easy to recognize by the double rooms, where one side indicates the winter threshold, and on the other — summer.

Preferences many motorists show which engine oil is better. The most widespread today received synthetic multigrade fluid.

How to use oil

Theoretical knowledge, of course, matter. But motorists, as a rule, more interested in questions of a purely practical nature, for example, a viscosity to pour the engine oil into the engine. In order to easily understand this, use a special classification called SAE. It identifies the specific viscosity of the engine oil. The table, which laid out all the data, makes it easy to understand what level is needed for the vehicle. The interpretation of the values it does not pose any difficulty.

Engine oil Viscosity table

The table below shows that at high temperature requires technical liquid with a thicker consistency and at lower liquid.

Please note that the higher the index, the greater will be the viscosity of the engine oil. The table below will complement the idea of sestonic.

The Right choice

Not to be mistaken with lubrication, you should first follow the recommendations of the vehicle manufacturer. Usually in the user manual description all specifications, which must comply with motor oil, including the required level of viscosity.

In Addition,and, of course, the nature of the vehicle.

Often, domestic consumers gain seseseko 10W40, and in recent years, and 5W30 or 5W40.

At ambient temperature from minus twenty to plus twenty-optimal will be the first variant in which use is possible from minus thirty to plus forty. Then run the motor will always be easy and safe for him.

The Ultimate freezing temperature is determined very simply: first you need to take forty. Thus, in oil 10W40, from 10 subtract forty and get -30. That is, with this lubricant you can safely use the car in temperatures up to minus thirty degrees Celsius.

If temperatures often drop below thirty, it is better to use 5W30 or 5W40. Then the motor will easily start and in such difficult conditions.

If the choice is incorrect

It Happens that the lubricating fluid used in those conditions for which it is intended. It is clear that without a trace for engine this service will not work. The situation is fraught with the following negative consequences.

1. If the viscosity of synthetic motor oil in the winter is insufficient because of excessive density it will not immediately work after you start the engine. Therefore, for some time, friction between parts will occur dry, leading to overheating and accelerated aging of the unit.
2. If the heat is too liquid oil, it will not be able to hold out on the details and cover them while you work film. Because of this comes the so-called oil starvation, resulting in engine the sad consequences.

That's why the choice of oil is so important to use the required viscosity grade engine oils for certain conditions.

Brand motor oil

Today the market of lubricating fluids is huge. The usual motorist's easy to get lost in all of the manufacturers offer products with various additional additives, flushes, and other things.

On the factory vehicles often recommended oil concrete manufacturers. If you are not very good and don't want to delve into this topic, the easiest way to take advantage of their advice and buy the brands that are offered. But, of course, most importantly, what motivates car companies in this matter, the commercial interest. Often they just enter into agreements with manufacturers of oils on advertising their products. It is therefore advisable to use other methods of selection lubricating fluid.

Test motor oil

Interesting are some product reviews that can be found in the media. If the test motor oils carry out independent publications, it is sometimes useful to examine to determine the choice of the brand.

If you stopped and started using this oil, it is best not to change it more and flood the engine only one brand. It is known that when changing from five to ten percent of the fluid remains in the engine. If after that pour the oil of another brand, who knows how to behave in one and the other additives of lubricant in a chemical reaction. So if you care about your engine, better not to risk it.

On the other hand, if any test engine oils has convinced you of the need to use a certain brand, it is advisable to flush the engine with the same oil, which you then will fill.