Can Synthetic Engine Oil Be Used for a Year?
2 Answers
Fully synthetic engine oil can be used for a year. Fully synthetic engine oil can be changed once a year. Fully synthetic engine oil is better than ordinary mineral oil and semi-synthetic oil, with stronger stability, better oxidation resistance and corrosion resistance, and naturally longer service life. Generally, it is recommended to change the oil once a year or after driving about 10,000 kilometers. The following are some details about fully synthetic engine oil: 1. Fully synthetic engine oil has better high-temperature performance; it is suitable for more severe driving conditions. 2. Synthetic engine oil manufacturers produce various types of engine oil according to user requirements, and the composition of synthetic engine oil can be adjusted based on different usage purposes. 3. The official explanation of synthesis is to achieve the desired molecular form through chemical reactions and human control, a process called synthesis. Engine oils blended with Group IV and Group V base oils without the addition of mineral oil can be called fully synthetic engine oil.
I've been driving for over a decade and found that synthetic oil does last longer, but whether it can last a year depends on the situation. Synthetic oil has strong oxidation resistance and doesn't degrade easily, but if you drive daily in congested city traffic, the oil gets dirty faster, shortening its lifespan. I recommend considering both mileage and time. For example, if you don't exceed 10,000 kilometers in a year, it might be fine, but if you do, it's better to change it earlier. Also, pay attention to driving habits—highway driving at constant speeds keeps the oil cleaner, while frequent short trips can cause the oil to absorb moisture and degrade. Don't forget to regularly check the oil level and color—if it's dark and thick, change it soon, or you risk increased engine wear and costly repairs. Weather also affects oil quality—cold climates make oil thicker and harder to flow, while hot climates speed up oxidation. In short, follow your car's manual—usually changing it every six months to a year is safe and worry-free. Don't risk extending it too long just to save money.