Should the third-generation EA888 use 30 or 40 engine oil?
2 Answers
EA888 third-generation uses 40 engine oil. Advantages of 40 engine oil: 5W40 has higher viscosity, providing better high-temperature protection performance. From the HTHS index perspective, Volkswagen requires this index to be greater than 3.5, and 5W40 engine oil meets this requirement. 5W40 introduction: The 'W' stands for Winter, and the smaller the number before it, the better the low-temperature fluidity of the oil, indicating a lower usable environmental temperature and better protection for the engine during cold starts. For example, 5W represents resistance to external low temperatures of -30 degrees, while 20W represents resistance to -15 degrees. The number after 'W' represents the kinematic viscosity of the oil at 100 degrees Celsius, with higher numbers indicating higher viscosity.
As a long-time owner of a third-generation EA888 engine, my experience tells me that 5W-30 oil is usually the most suitable choice. The manual often recommends this grade as it provides optimal engine lubrication and cooling while improving fuel efficiency to save some money. For new vehicles under normal city driving conditions, 30 viscosity is sufficient. However, if your car frequently operates in high-temperature regions or shows significant aging, switching to 5W-40 might be safer to prevent accelerated internal wear. Always check the manual during maintenance – selecting the right oil extends engine life and reduces failures, making it a cost-effective long-term investment.
