One of the most prominent mistakes made by motorists is to use one type of engine oil for the car throughout the year, whether it is in the summer or winter, believing that this does not affect the performance of the engine.
But in fact, this is one of the factors harmful to the car engine, as evidenced by a group of important symbols written on the package. The symbol “ SAE 10w-40 ” recorded on the package expresses very important information, including SAE 40 – which indicates that the viscosity degree This oil is suitable for high temperatures, meaning that it is suitable for the summer season. The number (40) also means that this oil should be used in the summer only.
It is worth noting that this number is proportional to high temperatures, meaning that the greater this number, the more this oil has the ability to maintain a degree of its viscosity when overheating at the high temperatures of the summer weather, in addition to the usual high temperature of the engine.
As for the symbol SAE 10w – recorded on the different packages, this matter refers to the use of this oil in the winter season, because its viscosity is low, which is what the car engine needs in the winter.
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