What type of engine oil is suitable for the Dongfeng AX7?
2 Answers
Dongfeng Fengshen AX7 should use 5W-30 fully synthetic engine oil. The functions of engine oil are as follows: Lubrication and wear reduction: Forms an oil film on the surfaces of two sliding components to prevent friction during operation, ensuring smooth movement of the parts. Cleaning and dispersion: High-quality engine oil can flush away contaminants from component surfaces through oil flow, adsorb tiny metal fragments inside the engine, and then scrape them into the oil pan via the piston oil ring. Cooling: When the engine operates, it generates high temperatures. As the oil reaches the operating parts, it absorbs heat and carries it away, assisting in component cooling. Sealing and leak prevention: Forms a sealing ring between the piston ring and piston through an oil film method, preventing combustion exhaust gases from entering the crankcase.
I've been driving the Fengshen AX7 for three years, and engine oil is something you really need to pay attention to. The 1.6T engine in this car works best with 5W-30, as clearly stated in the manual. The other day during maintenance, I saw the mechanic put 40-viscosity oil in a turbocharged car, and the fuel consumption shot up. If your car has run over 80,000 kilometers, switching to 5W-40 is acceptable—older engines with larger gaps need thicker oil films for protection. The key is to check for the ACEA C2 or API SP markings on the oil cap, especially for China-6 models with GPF particulate filters. Using the wrong low-ash oil can clog the exhaust in no time. Hearing the oil pump squeak during cold starts? Switch to full synthetic immediately, especially in northern winters—0W-grade oil's low-temperature fluidity is a lifesaver. Last time I cheaped out with mineral oil, the engine sounded like a tractor after 3,000 kilometers—a painful lesson learned!
