What grade of engine oil should be used for Changan CS35?

[BrielleLee]

Changan CS35's factory-recommended engine oil model is SL-grade 5W-30. Any engine oil that meets this specification parameter can be used. There is not much difference between brands. Engine oil is an important factor affecting engine performance and service life. The CS35 comes pre-filled with high-quality multi-viscosity oil at the factory, which can be used year-round except in extremely cold climates. 1. Engine oil grade classification: The number before W represents the flow performance at low temperatures. The smaller the number, the better the starting performance at low temperatures. The number after W represents the stability of the oil at high temperatures (i.e., the possibility of thinning). The larger the number, the better the stability. 2. Precautions: When selecting engine oil, pay attention not only to the quality grade but also to the viscosity grade. First, select based on performance grade; then choose the viscosity grade according to temperature and load.

[Layla]

What grade of engine oil is suitable for the Changan CS35? I've also driven this model and initially didn't know better, so I randomly used 10W-40 oil. As a result, cold starts in winter became particularly difficult, and engine noise increased. Later, I checked the owner's manual and found it recommends either 5W-30 or 10W-40, depending on the climate and the vehicle's age. Newer models often use 5W-30 full synthetic oil, which is thinner and flows more easily, making it suitable even in summer. The oil grade is indicated by the first number (5W means good low-temperature fluidity), while the latter part indicates high-temperature viscosity. Choosing the right oil ensures quieter engine operation, reduces wear, and can even save you some money on fuel. Change the oil regularly every 5,000 to 10,000 kilometers—don't neglect it like I did, which led to earlier maintenance intervals. Remember to check the dipstick; the oil level should be in the middle.

[ClaytonFitz]

For the engine oil selection of the Changan CS35, I recommend prioritizing the owner's manual, which states the manufacturer's recommendation such as 5W-30 full synthetic oil. From an economic perspective, investing in good-quality oil doesn't cost much but can improve fuel efficiency; the thinner 5W-30 reduces engine friction, saving about 0.5 liters per 100 kilometers on long-distance trips. In colder climates, avoid using overly thick oils like 10W-40, as they can lead to slower starts and higher fuel consumption; slightly thicker oils are acceptable in warmer regions. With numerous oil brands on the market, choose those meeting SN or SP API standards, compatible with gasoline engines to protect components from wear. I've also found that changing oil on schedule saves money and hassle, while inferior oil damages the vehicle and increases maintenance costs—don't compromise quality for the sake of saving a little.

[DeAshley]

The recommended oil grade for the Changan CS35 is typically 5W-30, but it depends on the local climate. In colder regions, 5W-30 offers better fluidity and quicker starts; in warmer areas, you can try 10W-40 for higher viscosity. Having driven a similar car, I noticed that seasonal changes significantly affect fuel consumption and engine performance. Engine oil protects engine components and prevents wear; it's suitable to choose gasoline engine oil with an API standard of SN or higher. Always refer to the manual for guidance and don't blindly trust online information. The oil change interval is generally six months or 5,000 km, and check the oil level to avoid overfilling or underfilling.