What type of oil is suitable for the Changan Yidong Plus?

[LeTessa]

Changan Yidong Plus uses 5W-40 oil. The letter W stands for Winter, indicating low-temperature performance. The number 5 before W represents low-temperature fluidity—the smaller the number, the better the oil's low-temperature fluidity. The number 40 after W denotes high-temperature viscosity—the larger the number, the better the oil's high-temperature viscosity. 5W40 oil is suitable for the following vehicles: 1. German and European cars: These typically have turbocharged engines with larger clearances, making 5W40 (higher viscosity) oil the ideal choice. European cars also commonly use 40-viscosity oil. 2. Vehicles over 7 years old: The oil viscosity should be chosen based on the car's age. If the car is over 7 years old, engine aging and increased wear are inevitable. Using higher-viscosity 5W40 oil can better protect the engine. 3. Frequent highway driving: If you often drive on highways, the engine's heat generation and wear are more severe. It's recommended to use 5W40 oil (for better stability). However, if you primarily use the car for commuting, especially in congested urban areas, a lower-viscosity oil like 5W30 is preferable. Its higher fluidity helps reduce carbon buildup, benefiting both fuel efficiency and performance.