What is the best engine oil for Changan CS35?
2 Answers
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.
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.
