What type of oil is used for the Changan CX70t?
2 Answers
The original oil specification for the Changan CX70 is SL-grade 5W-30 oil. Any oil that meets this specification can be used. Oil grades are typically classified by viscosity and oil quality. The details are as follows: SAE Viscosity Classification: High-temperature oils for summer use include 20, 30, 40, and 50. The higher the number, the greater the viscosity, and the higher the maximum applicable temperature. Low-temperature oils for winter use include 0W, 5W, 10W, 15W, 20W, and 25W. The symbol 'W' stands for Winter, and the smaller the number before 'W,' the lower the low-temperature viscosity and better the low-temperature fluidity, meaning it is suitable for lower minimum temperatures. All-season oils include 5W-20, 5W-30, 5W-40, 5W-50, 10W-20, 10W-30, 10W-40, and 10W-50. The smaller the number before 'W,' the lower the minimum applicable temperature, and the larger the number after the hyphen, the higher the maximum applicable temperature. API Engine Oil Quality Classification: Oils starting with 'S' (SA, SB, SC, SD, SE, SF, SG, SH, SJ, SL, SM, SN) are gasoline engine oils. The letters range from A to N, with each subsequent letter representing a higher grade than the previous one. For example, SN is a higher grade than SM. Oils starting with 'C' (CA, CB, CC, CD, CE, CF) are diesel engine oils. The letter grading is similar to the 'S' category, with later letters indicating higher oil grades.
I've been driving for over a decade, including a Changan CX70T, and 5W-30 full synthetic oil works best for this car. It starts up smoothly in northern winters and provides excellent high-temperature protection in summer. I usually use Shell or Mobil SN-grade oil, and after each oil change, the engine noise reduces significantly, and the throttle response becomes more responsive. I recommend changing it every 8,000 to 10,000 kilometers. Don't skimp by buying cheap, inferior oil—last time, a friend used a no-name brand oil for half a year, and the engine ended up with cylinder damage, costing thousands in repairs. The oil filter should also be replaced at the same time; otherwise, the new oil is wasted.
