What are the specifications of all-season engine oil?
2 Answers
The specifications of all-season engine oil are: 5W20, 5W30, 5W40, 5W50, 10W20, 10W30, 10W40, 10W50, 15W20, 15W30, 15W40, 15W50, 20W20, 20W30, 20W40, 20W50. All-season engine oil is designed for year-round use and provides lubrication to reduce friction, aids in cooling, seals against leaks, prevents rust and corrosion, absorbs shocks, and offers anti-wear protection. The steps for changing engine oil are: 1. Lift the vehicle, remove the undercover, and place a container with a capacity of about 10 liters under the drain plug; 2. Loosen the drain plug and use an air gun to blow for two minutes at the oil filler port; 3. After draining, tighten the drain plug and wipe it with a tissue to check for leaks; 4. Reinstall the undercover, lower the vehicle, and use a funnel to add new oil through the filler port.
Multi-grade oil doesn't refer to a single specification, but rather a type of multi-viscosity oil. For example, 5W-30 is very common, and I've been using it in my car for several years. The 'W' in front stands for winter, and a lower number is better, like 5W for smooth cold starts. The number 30 at the back indicates stable viscosity in summer heat. This design protects the engine all year round, unlike traditional oils that require seasonal changes. I drive a regular sedan, and the manual recommends this type—it maintains steady oil pressure and saves fuel. Choosing the wrong oil, like using 10W-40 in cold regions, might cause slow starts and higher fuel consumption. It's best to follow the vehicle manual's recommendation and regularly check oil levels and change intervals. This extends engine life, avoids unexpected repairs, and gives peace of mind while driving.
