What brand is the original engine oil for the Buick Excelle?
2 Answers
The most commonly used original engine oil model for the Excelle is 5W-30, and the brand is Mobil 1 full synthetic oil. If you want to change the oil during later maintenance, you can choose Mobil, Repsol, Shell, or Castrol. The official Excelle manual recommends engine oil models such as 5W-20, 5W-30, or 5W-40. The viscosity of engine oil changes with temperature, so special attention should be paid to its performance under low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity—5W means it can 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 value means the oil can maintain its viscosity index better at high temperatures, which can also be understood as providing better lubrication under high-temperature conditions. When choosing engine oil, keep the following points in mind: Select engine oil based on the engine's requirements. It is unnecessary to use overly advanced oil in engines with lower requirements, nor should you use lower-grade oil in engines with higher requirements. Try to choose multi-grade oil. Multi-grade oil is economical, long-lasting, and efficient, offering better protection for the engine. Due to its characteristics, multi-grade oil may appear darker prematurely and have lower oil pressure compared to conventional oil, both of which are normal.
I remember when driving the Buick Excelle, I always used the original ACDelco oil for maintenance at the 4S店. This brand is specially customized by General Motors and has excellent compatibility, ensuring smooth engine operation. I insist on using this oil because switching to other brands might cause compatibility issues and void the warranty. The manual specifies the use of ACDelco Dexos-certified oil. I check the oil dipstick once a month, and if the color turns black, it's time for a change. With this maintenance routine, the car has been running for over three years without any issues, saving a lot on repair costs. I recommend that beginners also choose original oil and avoid opting for cheap, off-brand alternatives. Consistently using the right oil can extend the vehicle's lifespan.
