How Many Kilometers Should Semi-Synthetic Oil Be Changed?
3 Answers
Automobiles using semi-synthetic oil can have it changed every 7,500 kilometers. The specific details are as follows: 1. The quality of engine oil has a significant impact on the engine. Engine oil serves functions such as lubrication, sealing, cooling, shock absorption, and rust prevention. To prolong the engine's lifespan, it is essential to change the engine oil regularly. Automotive engine oils can be categorized into three types: conventional mineral oil, semi-synthetic oil, and full synthetic oil. 2. Semi-synthetic oil uses semi-synthetic base oil, which is a product refined from mineral oil through hydrocracking technology. It is a blend of mineral oil and full synthetic oil in a 4:6 ratio. The purity of semi-synthetic oil is very close to that of full synthetic oil, but its cost is slightly higher than mineral oil, making it an ideal transitional product from mineral oil to synthetic oil.
I drive a lot, so I'm quite knowledgeable about oil changes. The replacement interval for semi-synthetic oil is generally around 7,500 kilometers, but it actually depends on the vehicle condition and road conditions. Personally, I change it around 7,000 kilometers because I often drive in the city, and engine carbon buildup is more severe during traffic jams. If you have good driving habits and smooth road conditions, changing it at 8,000 kilometers is also fine. Just don't exceed 10,000 kilometers, otherwise the oil performance will degrade quickly, causing more wear to the engine. I recommend checking the dipstick regularly—if the oil turns black or becomes too thin, it's time for a change. Also, remember to replace the oil filter along with the oil for a complete maintenance.
As a long-distance driver, I recommend changing semi-synthetic oil every 7,500 kilometers for safety. I've tried changing oil earlier several times and found that the oil is still usable before reaching 6,000 kilometers, but engine noise becomes noticeably louder after exceeding 8,000 kilometers. Now I stick to 7,500-kilometer intervals for maintenance, while having mechanics check the chassis and brake pads. Oil viscosity decreases in cold weather, so it's better to change it earlier in winter. Additionally, for older vehicles with high mileage or severe oil consumption, I suggest changing every 5,000 kilometers to significantly extend engine lifespan.
