What grade of engine oil is C2C3?
2 Answers
C2 and C3 are designations for the testing and certification standards of automotive lubricants established by the European automotive manufacturing industry. In terms of grade, C3 is higher than C2, but it is sufficient as long as it meets the requirements of your vehicle's engine. C2 and C3 engine oils are known for their stable quality and long-lasting performance. Here are the detailed descriptions: 1. C2: C2 can be used in high-performance gasoline and light-duty diesel engines equipped with DPF and TWC. It is a low-friction, low-viscosity oil. The minimum high-temperature high-shear viscosity for C2 is 2.9 mPa.s. This oil can extend the lifespan of DPF and TWC and maintain the vehicle's fuel economy. 2. C3: Similarly, C3 engine oil can also be used in high-performance gasoline and light-duty diesel engines equipped with DPF and TWC. The minimum high-temperature high-shear viscosity for C3 is 3.5 mPa.s, which is higher than that of C2, and it can further prolong the service life of DPF and TWC.
When I first started learning about car maintenance, I was also curious about the C2 and C3 oil grades. These are actually classifications under the European ACEA standards, specifically designed for high-performance engines or those with after-treatment systems. C2 oil is primarily for light-duty diesel vehicles, emphasizing fuel efficiency and low ash content. C3 oil, on the other hand, is suitable for both gasoline and diesel engines, requiring low ash content to reduce the risk of particulate filter clogging. If your car is a European brand like Audi, BMW, or Peugeot, the manual will likely specify this type of oil. Using the wrong oil can damage the emission system—I learned this the hard way when I once used regular oil and ended up with DPF issues. Regular oil changes and checks later got things back to normal. When choosing oil, pay attention to the label on the bottle, such as 5W-30 C3, which offers strong compatibility and makes maintenance easier.
