What does engine oil C3 mean?
1 Answers
C3 is a grade of engine oil, which is a European standard. Most C3 engine oils are not commonly seen in China. Since C3 engine oil is not suitable for domestic road conditions and fuel quality, most car owners in China do not use C3 engine oil. Below is an introduction to engine oil: 1. Lubrication and friction reduction: It forms an oil film on the surfaces of two sliding components, preventing friction during operation and ensuring smooth movement. 2. Cleaning and dispersion: High-quality engine oil can flush away dirt on component surfaces through oil flow, adsorb tiny metal fragments in the engine, and then scrape them into the oil pan via the piston oil ring. 3. Cooling: When the oil reaches operating parts, it absorbs heat and carries it away, assisting in component cooling. 4. Sealing and leakage prevention: It refers to forming a seal between the piston ring and piston using an oil film to prevent exhaust gases from entering the crankcase after combustion.