What grade of engine oil should be used for China VI diesel vehicles?
2 Answers
China VI diesel vehicles use 5w30 semi-synthetic grade engine oil. Semi-synthetic oil is one type of automotive engine oil, which is formulated using semi-synthetic base oil, specifically: internationally classified Group III base oil. It is a lubricant produced by refining mineral oil through hydro-cracking technology, consisting of a 4:6 ratio of mineral oil to full synthetic oil. The purity of semi-synthetic oil is very close to that of full synthetic oil. The China VI Motor Vehicle Pollutant Emission Standards are established to implement the Environmental Protection Law of the People's Republic of China and the Air Pollution Prevention and Control Law of the People's Republic of China, aiming to prevent and control pollution from the exhaust of compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health.
Regarding the question of what oil grade to use for China VI diesel vehicles, my opinion is that from the perspective of engine protection, specially designed low-ash oil should be used, such as API CK-4 or FA-4 grades. These oils are tailored for the new emission standards, reducing particulate generation, preventing DPF clogging, and ensuring the engine runs efficiently and durably. Always check the owner's manual, which will specify recommended grades like ACEA E6 or E9. Avoid using older grade oils casually, as they may affect the exhaust system and even increase maintenance costs. As a daily diesel vehicle user, I change this type of oil every 7,000 kilometers and find it cost-effective, with the engine running more smoothly. When changing oil, stick to reputable brands—don’t compromise quality for cheap prices—this approach saves money in the long run.
