• Engine oil - useful information

        Motor oil is an oil product or a synthetic product designed to lubricate the parts and assemblies in internal combustion engines.

        In addition to lubrication, engine oils perform the function of removing some of the heat that is released during engine operation, and to wash the sludge and deposits that are released during long-term operation of the vehicle.


        Their performance qualities are determined by the following technical characteristics:

        - a certain viscosity level;

        - Resistance to viscosity when changing temperature within certain limits;

        - low gas and vapor recovery rate;

        - poor foaming during work processes;

        - high filtering power;

        - Impact on metal and rubber nodes and details.


        According to the way of extraction the oils are divided into two basic types of products - mineral and synthetic.

        Mineral oils are extracted directly from the distillation of oil.

        The quality and consistency vary depending on the quality of the input oil and the processing conditions.


        The objective is to guarantee certain indicators of the final product:

        - stability;

        - viscosity;

        - pouring temperature;

        - ignition temperature.


        Synthetic oils are produced by controlled chemical processes and consist of one or more components.

        For this reason, the properties of the final product can be more precisely controlled.

        The operating range and operating performance are broader.


        The main disadvantage of mineral oils is that their molecules have a different structure that can affect positively or negatively the wear control. Synthetic base oils do not contain elements that cause the formation of sludge and other oil-destroying components. Synthetic lubricants can be used at high temperatures without degradation. Their resistance to decomposition allows their longer use.



        Viscosity is a measure of the resistance of the fluid to leakage. Perceived as density (internal resistance) when pouring or moving.

        It is a dynamic magnitude and changes with a change in temperature.

        High-grade oils retain their viscosity stable at different temperatures and conditions of use.

        For viscosity worldwide, the SAE (Society of Automotive Engineers) classification has been adopted.

        The designations are "SAE xxWyy", the number before the letter "W" (winter - winter) denotes viscosity at low temperatures and the number after W - viscosity at high temperatures.


        Stability of the oil

        Stability of the oil is expressed in the engine's operating time, in which engine oil retains its quality.

        Stability is characterized by the resistance of oil molecules at high operating temperatures. It is expressed in the inclination to form the so-called nagar.


        Hatching temperature

        It is the lowest operating temperature at which engine oil retains its performance.

        The lower the frosting temperature, the easier it is to start the engine in the winter. Less energy is lost in friction. The melting temperature for mineral oils is from -20 ° C to -28 ° C, while in the synthetic it reaches -54 ° C.


        Ignition temperature

        It is the temperature at which the heated oil forms sufficient vapors, which, mixed with the air, may form a burning mixture.

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