Can the LaCrosse 2.4 use 92-octane gasoline?

[DavidMarie]

The LaCrosse 2.4 cannot use 92-octane gasoline. Here are the refueling precautions for the LaCrosse 2.4: 1. Use unleaded gasoline with an octane rating of 93 or higher. 2. If gasoline with an octane rating lower than 93 is used, it may cause abnormal combustion during vehicle operation. 3. This can lead to engine knocking, increased fuel consumption, and reduced vehicle power. Additional information: 1. The LaCrosse 2.4 is a mid-to-high-end sedan launched by Shanghai GM, positioned between the Regal and Royaum. 2. It features a grand and luxurious exterior design, with a massive three-dimensional shield emblem and wide chrome-plated front grille. 3. The body utilizes thin engine partition processing and resin-filled pillars to prevent noise and vibration.

[BrynleeFitz]

I've been driving a LaCrosse 2.4 for five years and always use 92-octane gasoline. The inside of the fuel cap clearly states 'Recommended to use 92-octane or higher gasoline,' and the manual also specifies regular unleaded gasoline with an octane rating of 92. The compression ratio of this car is only 10.5, so 92 is more than enough. Don't fall for the gas station's pitch to upgrade to 95—it's just spending more money for similar performance. However, pay attention to fuel quality; never use low-quality gasoline with impurities from small gas stations, as it can easily clog the fuel injectors. I've used Sinopec's 92-octane for 80,000 kilometers, and the engine sounds normal with fuel consumption around 10 liters per 100 km—absolutely no issues.

[VanMaggie]

Having repaired Buick vehicles for over a decade, using 92-octane fuel for the LaCrosse 2.4L is standard practice. Its LTD engine was specifically designed for 92-octane fuel, and the direct injection system has excellent adaptability to lower-grade gasoline. In our workshop, we often encounter vehicles using 95-octane fuel that actually develop more carbon deposits due to incomplete combustion. However, two points should be noted: the malfunction light may activate when using lower-grade fuel if the fuel pressure sensor fails, and it's advisable to switch to higher-grade fuel during northern winters for better freeze protection.

[MadelynRose]

When I first bought a used LaCrosse, I was torn about this issue. The dealership said it's okay to use 92 octane. In practice, filling up with 92 saves about forty bucks compared to 95, with both giving a range of just over 600 kilometers. However, 95 octane feels slightly smoother when accelerating on the highway, though there's no difference in city driving. Remember to regularly use fuel system cleaner to prevent fuel pump issues in older cars. If you've modified the exhaust, go for 95; otherwise, feel free to stick with 92 for stock vehicles.