What does W20 engine oil mean?
3 Answers
W20 engine oil refers to the viscosity index of the oil. The functions of engine oil are: 1. To reduce friction and high temperatures; 2. To minimize gas leakage and prevent external contaminants; 3. To prevent contact between water, air, acidic harmful gases, and engine components; 4. To cushion the pressure rise in the engine cylinder ports; 5. To flush away dirt generated on the working surfaces of components. The method to check engine oil is: 1. Park the vehicle on a level surface; 2. After parking for 10 minutes, pull out the oil dipstick; 3. Hold the dipstick perpendicular to the ground to check the oil level. The method to change engine oil is: 1. Lift the vehicle, remove the undercover, and place a container of about 10 liters under the oil drain plug; 2. Unscrew the drain plug, use an air gun to blow into the oil filler port for two minutes, then tighten the drain plug after draining and wipe it with a tissue to check for leaks; 3. Reinstall the undercover, lower the vehicle, and use a funnel to add new oil through the filler port.
W20 is part of the engine oil viscosity grade, usually written in a form like 5W-20. The W stands for Winter, and 20 is the high-temperature viscosity value, indicating the oil's ability to maintain sufficient thickness at high temperatures. Having driven for many years, especially in northern winters, I often use 0W-20 oil because it flows easily at low temperatures, making the engine easier to start and preventing wear. Modern cars recommend this lower viscosity oil as it is more fuel-efficient, environmentally friendly, and can extend engine life. Don't forget to regularly check the oil level and change it, approximately every 5,000 kilometers or six months, otherwise, aged oil will affect performance. When choosing engine oil, checking the owner's manual is the most reliable, or consult a repair shop—don't just buy cheap models randomly. Protecting your beloved car is the most important.
Speaking of W20 engine oil, as an enthusiast in car modifications, I've delved into these details. It refers to oil grades like 5W-20, where 'W' stands for winter performance at low temperatures, and '20' indicates viscosity strength at high temperatures. The lower the number, the easier cold starts become, though high-temperature protection is slightly weaker. Modern engines are well-designed, and using 0W-20 can enhance acceleration response, fuel efficiency, and reduce emissions. Compared to traditional 10W-30, it may not suit all conditions, such as intense driving scenarios, but it's perfectly adequate for daily commutes. Every time I perform maintenance myself, I check the SAP value and certification standards on the label to ensure compatibility with engine requirements, making the drive more reliable and durable.
