What is the Difference Between 5w30 and 0w30?
1 Answers
5w30 and 0w30 engine oils differ in their low-temperature fluidity, with the following expanded details: Low-temperature fluidity of 5w30 and 0w30 engine oils: 5w30 engine oil can flow normally at temperatures as low as -30 degrees Celsius; 0w30 engine oil can flow normally at temperatures as low as -35 degrees Celsius. Engine oil naming: The 'w' stands for winter, and the smaller the number before the 'w', the better the oil's low-temperature fluidity. The number after the 'w' represents the oil's viscosity at 100 degrees Celsius. Functions of engine oil: Engine oil lubricates and reduces friction in the engine, assists in cooling, seals against leaks, prevents rust and corrosion, and provides shock absorption. Base oil is the main component of lubricating oil, determining its fundamental properties. Additives compensate for and improve the shortcomings of the base oil, imparting new properties, and are an important part of lubricating oil.