The original factory engine oil brand for the Haval H6 is Total SL-grade 10W-40 oil from France. If you want to change the oil during later maintenance, you can choose brands such as Shell, Mobil, or Total. The Haval H6 official manual recommends oil models 10W-40 and 15W-40. Any oil model that meets these two specifications can be used. The viscosity of engine oil changes with temperature, so special attention should 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 low temperatures of -30°C. The smaller this number, the better the low-temperature fluidity, making cold starts smoother. The second number represents the kinematic viscosity of the oil at 100°C. The higher the number, the better the oil can maintain viscosity at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the engine oil in the Haval H6 is as follows: Wait for the engine temperature to drop and allow the oil to flow back into the oil pan. Use a wrench to loosen the oil drain plug and place an oil pan to catch the old oil until it stops flowing. Start the engine for 30 seconds to allow the oil in the main oil passage to drain out. Use a special wrench to remove the oil filter. Apply oil to the oil seal of the new oil filter and tighten it clockwise by hand. Add the new oil through the oil filler cap on the engine valve cover. Generally, fill about three-quarters of the oil bottle. Start the engine and let it run for 5 minutes. Check for any leaks around the oil drain plug and oil filter. If there are leaks, perform necessary repairs. After stopping the engine, pull out the oil dipstick and check that the engine oil level is within the standard range.
