Can Semi-Synthetic Engine Oil Last for 10,000 Kilometers?

[DeBrady]

Generally, semi-synthetic engine oil needs to be replaced after about 7,500 kilometers. Below is relevant information: 1. If it is fully synthetic engine oil, it can last for 10,000 kilometers without any issues. This is because fully synthetic oil contains higher levels of additives (TBN), which extends the oil's lifespan. In contrast, semi-synthetic oil has lower additive (TBN) content, resulting in a shorter maintenance cycle. Prolonged use can negatively impact the engine. 2. The main difference between fully synthetic and semi-synthetic oil lies in the fact that fully synthetic oil can operate over a wider temperature range and has a longer service life. For the same oil film requirements, fully synthetic oil can achieve the desired performance with lower viscosity, whereas semi-synthetic oil requires a relatively higher viscosity to meet the same standards. In terms of cost, semi-synthetic oil is definitely cheaper.