
For a Langdong oil change, engine oil with a viscosity of 20 or 30 should be used. When the engine is operating normally, the oil forms a thin film on the surfaces of various components inside the engine, which helps reduce wear on these parts and also decreases the engine's running resistance. When changing the oil, it is recommended that car owners use a lift to raise the vehicle, then loosen the oil pan drain plug to drain the old oil. It is essential to replace the oil filter every time the oil is changed. The Langdong is a compact sedan with body dimensions of 4570mm in length, 1775mm in width, and 1445mm in height, with a wheelbase of 2700mm. It features a typical family-oriented front design, with lines that are less sharp but more rounded, giving it a harmonious appearance. The grille is fully chrome-plated, adding a more upscale look.

My Elantra has been running for three years, and I always use 5W-20 for oil changes as recommended in the manual. Its low viscosity ensures quick starts in winter while still protecting the engine in summer. The replacement interval typically ranges between 5,000 to 8,000 kilometers, depending on driving habits. If you do more highway driving, you can stretch it longer; for frequent short city trips, shorten the interval. Checking the dipstick is easy—just pull it out, wipe it clean, reinsert it, and ensure the oil level stays between Min and Max. Don't cheap out on low-quality oil—synthetic oil, though pricier, lasts longer and extends engine life. Regular changes also prevent carbon buildup, saving money and hassle.

As an experienced mechanic who frequently helps others with car repairs, I highly recommend using 5W-20 or 5W-30 oil for the Hyundai Elantra. The manual usually specifies these two grades, which are suitable for most climates in China. If the ambient temperature is high, 5W-30 offers better protection; in colder regions, 5W-20 ensures smoother operation. Don't forget to replace the oil filter during the oil change, as low-quality filters can clog the oil passages. It's advisable to check the oil level every 5,000 kilometers to avoid underfilling or overfilling. Synthetic oils like Mobil or Great Wall brands perform exceptionally well, enhancing lubrication efficiency and reducing noise. Remember to change the oil promptly to prevent engine wear, ensuring hassle-free daily maintenance.

I pay attention to environmental protection, and using 5W-20 oil is ideal for the Langdong. Low-viscosity oil reduces friction, saving about 15% on fuel, indirectly lowering carbon emissions. Don't arbitrarily change the model recommended in the manual, and ensure used oil is recycled—improper disposal can pollute the soil. With good maintenance, the engine responds more smoothly. Follow the manufacturer's recommended oil change frequency for both environmental and practical benefits.


