What type of oil should be used for the Langdong?
2 Answers
The Langdong uses SM5W-20 original semi-synthetic oil. If you want to change the oil during later maintenance, you can choose fully synthetic oils from well-reputed brands such as Mobil, Shell, or Castrol. The official manual recommends 0W-20 oil, but considering China's temperature conditions, 5W20 or 5W30 oil can be used in most areas. The viscosity of the oil changes with temperature, so special attention is needed to its performance under low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity, with 5W representing the ability to withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, making cold starts smoother. The latter number represents the oil's kinematic viscosity at 100°C. A higher number means the oil can maintain viscosity better at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the Langdong's oil 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 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 seal of the new oil filter and tighten it clockwise by hand; Add the new oil through the engine valve cover filler port, usually filling about three-quarters of a bottle; Start the engine and let it run for 5 minutes, checking for leaks around the oil drain plug and oil filter. If there are leaks, repairs are needed; After stopping the engine, pull out the dipstick to check if the oil level is within the standard range.
I've been driving for many years and have always used a Hyundai Elantra. Choosing the right engine oil is crucial. It typically recommends SAE 5W-20 full synthetic oil, as stated in the manual. I use brands like Mobil 1, which offer excellent engine protection, reducing wear and extending engine life. In cold climates, this oil flows well for quick starts, and it remains stable in hot weather. The usual oil change interval is every six months or 5,000 kilometers—don't delay it too long, or you might face increased fuel consumption or oil burning issues. Before each maintenance, I always check the dipstick and manual to ensure the correct oil type is added for safe driving.
