Engine Oil

Engine oil is an important fluid in cars and heavy machinery because it performs several important functions, such as lubricating the engine and reducing friction between moving components, cooling the engine, and cleaning it from deposits and impurities. The characteristics of engine oils vary according to the type of engine and operating conditions and depend on the chemistry and additives used.

Engine oils are composed of base oils and additives that add the desired properties. The viscosity of different oil types varies, for example high viscosity oils are used in low temperature conditions, while low viscosity oils are used in high temperature conditions.

The desired characteristics of engine oil are determined through classifications and specifications established by different organizations and companies, such as the American Standards Association (SAE) and the European Automobile Manufacturers Association (ACEA).

Engine oil should be changed regularly to ensure the engine operates at high efficiency and is protected from damage and wear. The appropriate engine oil should be selected based on the type of engine and operating conditions.