How many kilometers should fully synthetic engine oil be changed?

[RubyAnn]

Fully synthetic engine oil is generally changed every 12 months, or approximately every 10,000 kilometers if calculated by mileage. However, the oil change interval is related to the engine's operating conditions. For example, if the engine has slight oil burning, the oil change interval should be shortened. Characteristics of fully synthetic engine oil: As the top-tier product among engine oils, fully synthetic oil has excellent high and low-temperature resistance. Its superior lubrication performance can adapt to relatively harsh vehicle conditions. Additionally, fully synthetic oil has low friction resistance, strong cleaning ability, effectively removes carbon deposits and sludge, is not prone to oxidation, and has a long service life. Precautions for changing engine oil: When changing the oil, it is best to replace the oil filter as well, otherwise accumulated impurities can easily cause blockages. The oil pan bolt should be replaced with each oil change, as the oil pan screw serves as a protective measure for modified engines or engines under long-term high-load operation. When changing the oil, try to choose multi-grade oil, as it is economical, has a long service life, and provides good protection for the engine.