Does the Buick Regal use 92 or 95 gasoline?
3 Answers
The Buick Regal 1.5T model uses 92-octane gasoline, while the 2.0T model uses 95-octane gasoline. Only when the octane rating of the gasoline meets the engine's compression ratio requirements can the vehicle's power and fuel efficiency be fully utilized. You can check the car's user manual, which specifies the required fuel grade. Here is some information about gasoline: 1. The gasoline grade represents the octane rating of the fuel. The higher the grade, the higher the octane rating, indicating better anti-knock performance. Better anti-knock performance ensures smoother engine operation, reduces wear, and provides better engine protection. 2. If a high-compression engine uses low-grade gasoline, incomplete combustion may occur, leading to severe engine vibration, reduced power output, engine damage, increased fuel consumption, and poor driving performance. Conversely, if a low-compression engine uses high-grade gasoline, delayed combustion may occur, meaning the fuel does not reach its auto-ignition point at maximum compression, also resulting in incomplete combustion. This requires additional fuel injection to ensure power output, which not only offers no benefit to the engine but also increases fuel consumption.
I've been using 92-octane gasoline for my Buick Regal for three or four years without any issues. The manual says both 92 and 95 are acceptable. 92-octane is more economical, with lower prices and slightly better fuel efficiency. 95-octane offers stronger power, with smoother response during startup and high-speed acceleration, but 92-octane is completely sufficient for city driving. Knocking issues? Buick's engine design is solid—92-octane provides enough anti-knock performance unless the car has been modified, making 95-octane unnecessary. Avoid switching octane levels too frequently; the engine sensors will adapt, but it's best to check local gas station quality before each refill. During regular maintenance, mechanics often say 90% of owners use 92-octane without problems, unless they drive a high-performance version. Overall, 92-octane can save a few hundred yuan per month, making it worth sticking with long-term.
I've driven a Buick Regal using both 92 and 95 octane gasoline. The 95 octane indeed delivers better performance - the car accelerates swiftly with just a light press on the throttle, especially noticeable during mountain drives or highway overtaking. The engine feels quieter and more powerful. While 92 octane is cheaper and works fine for daily commutes, I've also tried mixing them without harming the car. The manual recommends either 92 or 95 octane, with higher-spec models like the sport version better suited for 95, while the standard version runs sufficiently on 92. The power boost isn't significant unless you floor the accelerator. Fuel quality matters most - always choose reputable gas stations and avoid cheap, low-quality fuel to prevent engine carbon buildup. In terms of fuel economy, 95 octane sometimes offers better mileage, making both options cost-effective overall. For new cars, I suggest trying 92 octane first to observe engine performance, then switch to 95 if any issues arise.
