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Engine oils: manufacturers, specifications, reviews. Semisynthetic motor oil

The application of autochemistry for the engine is a necessary measure, which allows to prolong the service life of the operated unit. A variety of oils designed to support the performance of the motor group, often complicates the choice of motorists. For this reason, you should initially have an idea of the properties of this product, manufacturers and feedback from other users. It is important to understand that motor oils can not only provide the technical support function of the engine, but also reveal themselves in negative performance if the choice of composition was incorrect.

Features of semisynthetic oils

Typically, manufacturers distinguish two groups of oils of this type - mineral and synthetic. They are the basic bases on which the working properties of the chemical composition depend. Mineral oils are derived from petroleum feedstocks. In essence, this is a rough-made base from products left over from refining to one type of finished fuel. Synthetic oils, in turn, are initially developed from individual components of petroleum products that have undergone a more thorough pre-preparation in the laboratory.

Obviously, the question of what kind of engine oil to fill, is decided in favor of synthetic auto chemistry. But the cost of such funds is much higher, so many are turning to semi-synthetic oils. On average, 70-80% of such mixtures are formed from a synthetic high-quality base, and the rest is made up of a mineral base. At the output, the user can rely on optimum viscosity, wear resistance, balanced antioxidant and detergent qualities.

The main characteristics of oils

The viscosity index is the main characteristic that is taken into account when choosing an oil. In accordance with the SAE specification, this parameter is indicated by a double number - for example, 5W-40. The first figure indicates the dynamic viscosity of the composition, which manifests itself in conditions of negative temperature. The second number indicates the viscosity class of the composition calculated for the summer operation. Letter W indicates the use of oil in the winter. The very meaning of the figure should be considered as a temperature limit, in which the composition will be optimally pumped, ensuring the start-up of the engine.

A special characteristic with the HTHS marking was introduced to assess viscosity at elevated temperatures. For example, a semi-synthetic motor oil with a viscosity that corresponds to a value of 3.5 mPa * s for this system belongs to a high class of HTHS. The higher this value, the thicker the oil film, and vice versa. But do not consider the thickness indicator of this layer as a confirmation of the quality of the composition. Modern motor mechanisms no longer require the provision of a high ability to smooth mechanical friction. In any case, the minimization of this effect is achieved through the addition of enzymes. And in this respect, the quality of the oil will depend more on its ability to spread additives throughout the motor group at high speed.

Operational properties

Primary is the property of lubrication, due to which the liquid minimizes the friction effect of the parts. Accordingly, the resource of the elemental base is preserved and heat release is reduced in the course of engine operation. Along with this, anti-rust and anti-fire properties can have great significance. Such motor oils are usually selected for power plants operating under extreme conditions or under high loads. But to some extent, additives of this kind are provided in all modern formulations. Add to this kit is a washing function, thanks to which the engine and adjacent components are kept clean.

Product Reviews Mobil

Among the semi-synthetic oils of this manufacturer, the composition of ULTRA 10W-40 deserved special trust. To the merits of the product motorists include the optimal lubricating qualities, which are manifested in the conditions of a sharp temperature change. This property is ensured by the use, already in the base filling, of a high quality mineral base with improved additives. That is, according to the working properties, which is again confirmed by the users themselves, this composition is close to synthetics. And if many modern manufacturers of motor oils seek to optimize the component composition of semisynthetic to offer a low-cost, but relatively high-quality product, then Mobil Ultra calculated for the actual upgrade of the class while maintaining a moderate price tag.

True, there were some negative factors of oil exploitation. Users point out that in the conditions of prolonged use in the frost the composition manifests itself not in the best way, losing its important physical properties.

Product Reviews ELF

In this case, the Evolution line is considered, in which the brand 10W-40 is also presented. For starters it is necessary to note the versatility of the oil. It is calculated for operation by any engines - diesel and gasoline, including direct injection. Use it and the owners of cars, and the drivers of vans with small trucks. And oil shows good performance at short and long distances, which indicates the reliability of the composition. But, again, engine oils from the Evolution series should be used carefully in conditions of severe frost. But if you need good detergent quality, then this option will be best - users put this quality on the list of the main advantages of the product.

Product Reviews Shell Helix

The well-known brand in the release of the latest products of this category achieved the greatest success in the series HX7 10W-40. It has already been noted that high-quality modern engine oil is characterized by a circulation speed that ensures the timely distribution of active additives. It is this quality that the users of Helix HX7 also note. The same is added to the resistance to oxidative reactions and stability in the work against the background of shear loads.

In terms of viscosity and work to reduce friction, reviews of engine oils of this family are also generally positive. The composition can not be called revolutionary in terms of characteristics, but from the point of view of operation by the ordinary motorist, it fully justifies the declared effect.

Product Reviews Castrol Magnatec

The oil of this company is suitable for those who expect to receive high protective qualities. However, as noted by users, this effect is achieved by lowering the energy-saving function. Good detergent properties also led to a modest index of deposits. But in the course of long-term use, many motorists also observe a decrease in the alkaline coefficient, that is, the working resource of the composition is not so great in comparison with the analogues described above. Similar qualities are demonstrated by motor oils with a synthetic base, but they do not always become the optimal solution for long-term use. Especially when you consider their high cost.

Price issue

On the market car oils are available with different volumes - in canisters from 1 to 5 liters. The minimum volume is on average from 300 to 500 rubles. Then follows the capacity of 3 to 4 liters, which can be purchased for 1-1,5 thousand rubles. Less often, 5-liter cans are sold, an average of 2-3 thousand. If we talk about the relationship between value and brand, then the cheapest are the compositions of Lukoil and Total QUARTZ. The middle segment is represented by the original engine oils Shell Helix and Castrol. The most expensive products of this line are produced by Mobil, Motul and LIQUI MOLY. Although we must take into account that under premium brands often come inexpensive compounds, which, however, and on the performance properties do not look impressive.

How to choose semisynthetic motor oil?

The choice of auto chemistry largely depends on the technical state of the mechanism to which it is applied. That is, the state of the motor, the requirements for its operation should become the main factor in the selection of the composition. This means that initially the driver must determine a set of properties that will become crucial for the engine of his car. The right choice is the engine oil, the characteristics, testimonials and test results of which completely fit into the requests of a specific power plant for lubricating, cleaning and protective qualities. At the same time, the external conditions for the use of the composition, which determine its labeling, are taken into account. In this part, the car owner should evaluate the temperature limits of oil operation, and also make a correction for the seasonal factor.

Conclusion

Semisynthetic lubricating fluids for servicing the motor group can not be called the best option for each case. High-quality synthetics are more likely to provide more reliable protection of parts and the engine as a whole from negative factors of operation. Nevertheless, properly selected recommended motor oils from the semi-synthetic segment from well-known companies can also guarantee the required set of functions. The use of high-tech additives in the basic composition of such a liquid makes the thorough preliminary cleaning of the oil product unnecessary.

Of course, there are cases where even without a multi-level pre-preparation of oil in the laboratory can not do, but to the requests of ordinary motorists, this applies to a minimum. If we compare semisynthetic with mineral compounds, the difference will be much more significant. Unrefined oil base obviously loses to the modified fluids for the main operational properties, therefore it is better to abstain from this choice.

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