Can fully synthetic engine oil be used for one year?

[JadeLee]

Fully synthetic engine oil can be used for one year. Currently, common fully synthetic oils on the market are made from Group III base oils through hydrogenation. Fully synthetic oils offer stronger stability, better oxidation resistance, and corrosion resistance, naturally resulting in a longer service life. Generally, it is recommended to change the oil every year or after driving approximately 10,000 kilometers. Below are specific methods for choosing engine oil for your car: 1. Performance selection: If you prioritize long-lasting oil performance, you can choose Mobil oil; if you focus on engine cleanliness, Shell lubricants are a good option; for stronger oil film toughness, Castrol is recommended. 2. Driving conditions: For frequent driving in congested areas, older vehicles, or long-distance heavy-load transportation, the viscosity of the lubricant can be appropriately increased. 3. Engine type: For naturally aspirated engines, mineral oil or semi-synthetic oil can be used. Compared to naturally aspirated engines, turbocharged engines have a more compact structure and operate under harsher conditions, requiring higher-quality lubricants with better fluidity, preferably fully synthetic oil.