What is SP5W30 Engine Oil?
2 Answers
SAE stands for the Society of Automotive Engineers. 5W-30 is the viscosity grade of engine oil. SAE-5W-30 is a multi-grade oil suitable for both winter and summer use. The 5W indicates the oil's ability to withstand external low temperatures of -30°C, while the 30 signifies its maximum resistance to temperatures up to 30°C (summer temperatures). Additional information about engine oil is as follows: 1. Composition: Engine oil consists of base oil and additives. The base oil is the primary component of lubricating oil, determining its fundamental properties. Additives compensate for and improve any deficiencies in the base oil's performance, providing new characteristics and making them an essential part of lubricating oil. 2. Function: Engine oil serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and act as a shock absorber.
I often see the term SP5W30, which refers to a type of engine lubricating oil commonly found on oil bottles. The 5W indicates good fluidity at low temperatures in winter, making it easier to start the car; the 30 represents moderate viscosity at high temperatures, preventing engine wear. API SP is the latest standard, more advanced than the older SN, effectively reducing carbon buildup and protecting the catalytic converter. This oil is suitable for most modern cars, such as Japanese brands like Honda and Toyota or German brands like Volkswagen, and is highly recommended. Choosing the right oil during maintenance can extend engine life. I always remind myself to check it every 5,000 kilometers to avoid excessive aging affecting performance.
