
The original factory engine oil brand for the Wingle 5 diesel version is Total National V diesel engine oil. If you wish to change the oil during later maintenance, you can choose brands such as Shell, Mobil, Castrol, or Total. The official manual for the Wingle 5 diesel version recommends engine oil with the specification C3-5W-30. Any oil model that meets these specifications can be used. The viscosity of engine oil changes with temperature, so special attention must be paid to its performance under both low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity. 5W means it can withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, ensuring smoother cold starts for the vehicle. The latter number represents the kinematic viscosity of the oil at 100°C. A higher value means the oil can maintain its viscosity index better at high temperatures, which can also be understood as providing better lubrication performance under high-temperature conditions. The method for changing the engine oil in the Great Wall Wingle 5 diesel version is as follows: Wait for the engine temperature to drop, allowing the oil to flow back into the oil pan; Use a wrench to loosen the oil drain plug and place an oil pan underneath to catch the old oil until it stops flowing. Start the engine for about 30 seconds to allow the oil in the main oil passage to drain out; Use a specialized wrench to remove the oil filter; Apply oil to the seal of the new oil filter and tighten it clockwise by hand; Add the new engine oil through the filler cap on the engine valve cover. Generally, fill about three-quarters of a standard oil container; Start the engine and let it run for 5 minutes, then check for any leaks around the oil drain plug and oil filter. If leaks are found, perform necessary repairs; After stopping the engine, pull out the oil dipstick to check that the engine oil level is within the standard range.

I've been driving the Wingle 5 diesel version for three years, and this truck really demands attention when it comes to engine oil. The factory requires CI-4 or higher grade diesel oil, something like Shell Rimula R5 is quite suitable. Diesel engines operate under high pressure, regular gasoline engine oil can't handle it - you must look for the 'C' designation on the packaging. 15W-40 viscosity works year-round, but switch to 5W-30 if temperatures drop below -20°C in Northeast China. A friend of mine tried saving money with cheap oil, and his turbocharger failed prematurely - the repair cost could've bought ten years' worth of good oil. The KunLun diesel oil sold at gas stations now is also acceptable, the key is not to believe repair shops pushing mixed gasoline engine oil.

A veteran transport driver shares: Fengjun 5 diesel version runs on rough fuel but don’t feed it the wrong oil. You must use CH-4 grade or higher diesel engine oil, with 15W-40 viscosity being the safest bet. Last time on the Qinghai-Tibet Plateau, switching to 10W-40 at minus ten degrees Celsius was no problem. The key is to check the ACEA standard on the oil can—look for E7/E9 labels. I’ve had good results with Zunlong T500; even after an 8,000 km oil change interval, the engine still sounds crisp. Never trust those so-called universal gasoline-diesel oils—their high-temperature shear values are insufficient, and piston ring wear will leave you regretting it.

Practical advice for car owners: Three key factors to consider when choosing diesel engine oil. First, look for certification standards, specifically API CJ-4 or ACEA E9. Second, opt for the basic 15W-40 viscosity grade. Finally, choose a reputable brand like Mobil Delvac. While repair shops often recommend Longpan full synthetic oil, which is also acceptable, be aware that DPF-equipped models require low-ash CK-4 grade oil. Based on my comparison, mineral oil needs replacement at 7,000 km, while full synthetic can last up to 12,000 km, with similar cost per kilometer. Don't forget to use a Baowang oil filter, as generic filter paper may leak debris.

From a technical perspective: The GW4D20 diesel engine in the Fengjun 5 requires engine oil with a high-temperature shear value of ≥ 3.5 mPa·s. It is recommended to use ACEA E7 grade 5W-40 full synthetic oil, such as Fuchs Titan Super Diesel Engine Oil. Special attention should be paid to models equipped with particulate filters, which must use low-sulfur, low-ash oil (ash content < 0.8%), otherwise the DPF may become clogged. I have tested the TBN (Total Base Number) of different engine oils and recommend choosing a long-life oil with a TBN ≥ 10. During , ensure the old oil is fully drained for at least 15 minutes before adding new oil.

To save money in the long run with car usage, choosing the right oil is key. For the Wingle 5 diesel version, the original Great Wall Zunlong oil is sufficient—a CI-4 grade mineral oil costing just over 200 yuan per barrel. For an upgrade, you can opt for Shell Rimula R6, a fully synthetic oil that can last up to 15,000 kilometers but costs three times as much. Here’s a tip for identifying genuine oil: authentic products have an anti-counterfeit coating on the bottle cap, and the injection molding marks on the barrel are smooth without burrs. There’s no need to deliberately change viscosity with the seasons—15W-40 is suitable for temperatures ranging from -25°C to 40°C. Check the dipstick every 5,000 kilometers; if the oil turns black or contains metal shavings, change it ahead of schedule.


