What is the best engine oil for Changan CS35?

[Gretchen]

CS35 requires SL grade 5W-30 viscosity engine oil during maintenance, with an oil volume of 3.4L. After filling, the oil level on the dipstick should be at the middle mark. Below are precautions for adding engine oil to the car: Always use the original manufacturer's recommended oil. Different types of engine oil should not be mixed, as this may interfere with the normal operation of the engine, and in severe cases, damage the engine and reduce its service life. The following are the steps for changing the engine oil: 1. Remove the oil cap. 2. Place an oil pan under the drain plug. 3. Use a wrench to loosen the drain plug and drain the oil. 4. After the oil is completely drained, reinstall the drain plug and tighten it to the specified torque (55±5N.m). 5. Slowly add engine oil through the oil filler hole until it reaches the upper limit on the dipstick. 6. Use an absorbent cloth to wipe off any spilled oil and cover the oil filler cap. 7. Start the engine and let it idle for 1 minute, then turn it off and wait for 5 minutes before checking the dipstick again.

[DelilahLee]

I've been driving the Changan CS35 for several years and found that 5W-30 full synthetic oil works best. The vehicle's manual generally recommends API SP specification, and the 5W-30 viscosity ensures smooth engine operation in most weather conditions—it doesn't thin out in high temperatures and allows quick starts in cold weather, protecting pistons and cylinders to reduce wear. I chose full synthetic oil because of its superior cleaning performance, preventing dust buildup and extending engine life, making it more durable than mineral oil. For those frequently driving in cold northern regions, consider 0W-30 for faster acceleration; if you often drive on highways, try slightly thicker 5W-40 to prevent overheating. No need to go for premium brands—mid-range options like Shell or Mobil series are sufficient, just ensure the packaging has the genuine API certification. Don’t skimp on this—change the oil every 5,000 to 10,000 kilometers as per the manual’s guidance. Neglecting it can lead to oil-burning issues.

[StJayla]

After using the Changan CS35 for so long, I've found that 5W-30 full synthetic oil is the ideal choice. The manufacturer preset this viscosity during the car's design to match seasonal changes, ensuring smooth driving whether it's warm in winter or cool in summer. Full synthetic oil is more stable, less prone to contamination, and makes the engine run much quieter, providing long-term peace of mind. If you frequently encounter city traffic jams, avoid overly high viscosity to prevent increased fuel consumption; for those who enjoy spirited driving in the suburbs, opt for a high-temperature resistant version for better protection. Personally, I recommend sticking with common brands, such as Costco's own brand, which offers good value for money—don't skimp and buy cheap, low-quality products that could harm your engine. Remember to check the oil dipstick regularly and change the oil, typically every six months or 10,000 kilometers, adjusting based on your driving habits to keep your car in top condition.

[DelAdrian]

I think the fully synthetic 5W-30 engine oil is a good choice for the Changan CS35. It's a commonly recommended specification, suitable for normal weather conditions, provides adequate engine protection at a moderate price. Fully synthetic oil lasts longer than semi-synthetic, reduces the risk of engine carbon buildup, and offers quick cold starts with better fuel efficiency. Always check the manual when changing oil to avoid mistakes. For occasional long trips, you may opt for a thicker variant for simpler maintenance and durability.