What kind of engine oil should be used for the Great Wall Fengjun 5 diesel version?
3 Answers
Great Wall Fengjun 5 diesel version can use C35W-30 engine oil. Here is some introduction about engine oil: 1. Engine oil: also known as engine lubricant, it can lubricate and reduce wear, assist in cooling, seal and prevent leakage, prevent rust and corrosion, and cushion shocks for the engine. 2. Composition of engine oil: the base oil of engine oil currently in use is composed of hydrocarbons, poly-alpha-olefins (PAO), and poly-internal-olefins (PIO), all of which are organic compounds made up of carbon and hydrogen. 3. Engine oil viscosity standard: SAE (Society of Automotive Engineers) viscosity classification is used to distinguish the different temperature ranges suitable for lubricating oils.
After driving the Great Wall Wingle 5 diesel version for so many years, I've always insisted on using CI-4 grade oil. This turbocharged engine is particularly picky about oil. In northern winters, I use 5W-40 full synthetic oil - it starts perfectly even at -20°C. In summer, switching to 15W-40 mineral oil is sufficient. Never cheap out by buying universal gasoline/diesel oil - diesel engines produce more carbon deposits and require dedicated oil to withstand high-pressure environments. Last year I tried Kunlun K-series CH-4 oil and completed a 10,000 km oil change cycle without issues - the engine ran noticeably smoother after the change. Remember to always replace the oil filter simultaneously during oil changes, otherwise metal particles in the old filter will contaminate the new oil. If you frequently haul loads over long distances, I recommend using CK-4 full synthetic oil for better protection.
I've been driving the Great Wall Wingle 5 for freight transport over three years, and engine oil is something you really can't take lightly. The manual clearly states to use diesel engine oil of CI-4 grade or above, with viscosity options of 10W-40 or 15W-40 depending on the season for optimal safety. Last winter in Harbin, I tried Mobil Delvac, which indeed provided smooth cold starts, though it's a bit pricey. Later, I switched to Sinopec's Delong T500, which offers much better value for money—oil sample tests still showed it was good even after 8,000 kilometers. The key is to check for the 'C' certification mark on the oil container. I've seen cases where gasoline engine oil was mistakenly used, leading to severe engine knocking. For oil filters, I recommend Mann or OEM parts; aftermarket filters are prone to oil leaks. The newly introduced CK-4 grade oil is more suitable for China VI vehicles, but CI-4 is perfectly adequate for older models.
