Should the Excelle use 5W30 or 0W20?

[LeEmiliano]

The Excelle is better suited for 0W20 engine oil. According to the maintenance manual, the factory-fill oil is 0W20. To determine which oil to use for the Excelle, refer to the maintenance manual. Generally, maintenance items should follow the requirements and recommendations outlined in the manual. Additional information: 1. Low-viscosity oil in winter is less likely to solidify even at low temperatures, making it easier to start the vehicle. Once the vehicle is running, a slightly higher viscosity lubricant is preferable to reduce wear. 2. The primary purpose of adding engine oil is to lubricate and protect engine components, thereby extending the vehicle's lifespan. Fuel efficiency is a secondary consideration.

[LenaLee]

As a long-time owner of an Excelle, I've found that choosing the right engine oil requires careful consideration. The manual typically recommends 0W-20 or 5W-30. 0W-20 offers better fluidity, making cold starts easier and slightly improving fuel efficiency, but it provides weaker engine protection, especially during frequent stop-and-go traffic where wear can be more significant. On the other hand, 5W-30 is thicker, making it more suitable for long-distance highway driving or hot weather, offering stronger wear protection at the cost of slightly lower fuel economy. My car is a recent model, and I've found 0W-20 to be smooth, but I always check the oil condition before long summer trips. I recommend consulting the manual or asking the dealership first, rather than blindly following trends, to avoid long-term engine damage from using the wrong oil. Regular oil changes are crucial—typically every 5,000 kilometers—to maintain stable performance.

[LaElias]

Many Buick Excelle owners ask this question when I repair cars. Most newer models require 0W-20 oil, which has lower viscosity to reduce internal resistance and help the engine save fuel and run efficiently. However, older models or high-mileage cars are better suited for 5W-30 oil, which provides additional protection against oil leaks or carbon deposits. Temperature differences also matter: 0W-20 starts faster in cold winters, while 5W-30 is more reliable in hot summer regions. If the manual isn't clear, I recommend owners do a small test—use 0W-20 for short commutes and 5W-30 for frequent highway driving. Above all, don't neglect regular maintenance. Check the dipstick during every oil change to ensure the oil is clear and free of impurities, which can extend the car's lifespan by tens of thousands of kilometers.

[LawsonRose]

I've been using the Buick Excelle for three years. Initially, I was torn between 5W-30 and 0W-20 oil. The manual recommended 0W-20, so I tried it, and cold starts were indeed quicker, with slightly better fuel economy in city driving. However, during a summer road trip, I switched to 5W-30 and noticed the engine ran more stably with less noise under high temperatures. Now, I've made it a habit to use 5W-30 in summer and 0W-20 in winter. Always remember to buy genuine oil to avoid counterfeits. Mixing oils occasionally is fine, but don't make it a long-term practice. Regularly checking your oil level is a hundred times more important than the oil grade—never wait until the oil light comes on to take action.