What are the three major motor oil brands?

[GenesisMarie]

Three major brands are Castrol, Shell, and Mobil. The selection of motor oil brands and the functions of motor oil are specifically introduced as follows: Motor oil brand selection: For the selection of motor oil brands, if you focus on the long-lasting performance of the oil, you can use Mobil motor oil; if you need motor oil with strong cleaning ability, it is recommended to choose Shell motor oil; if you need motor oil with strong oil film toughness, it is recommended to use Castrol. For example, turbocharged engines are prone to carbon deposits during high-speed operation, so Shell full synthetic oil with strong cleaning ability can be used. Functions of motor oil: Motor oil can lubricate and reduce wear on the engine, assist in cooling and temperature reduction, seal and prevent leaks, prevent rust and corrosion, and provide shock absorption. It is known as the "blood" of the car. Choosing the right motor oil and changing it regularly can maintain the engine in good condition and extend its service life.