Is it necessary to use 95 octane gasoline for the new LaCrosse?

[DiAniyah]

The new LaCrosse's manual specifies a minimum requirement of 95 octane gasoline, so it is necessary to use 95 octane fuel. This is because the LaCrosse is equipped with a 2.0T turbocharged engine, which requires fuel with good anti-knock properties. It's not that 95 octane is better than 92 octane, but rather that choosing the right gasoline for the engine is more important. Generally, naturally aspirated engines use 92 octane gasoline, while turbocharged engines mostly use 95 octane. To maintain engine cleanliness and achieve optimal vehicle performance, the Buick LaCrosse with a 1.5T engine should use unleaded gasoline with a nominal octane rating of 92 or higher. For vehicles with a 2.0Turbo engine, unleaded gasoline with a nominal octane rating of 95 or higher should be used. If the octane rating is lower than the specified value, you may hear engine knocking noises while driving, typically referring to spark knock. If this occurs, please use gasoline with the above-mentioned octane rating as soon as possible. If severe knocking is still heard when using gasoline with the specified octane rating or higher, promptly take the vehicle to a repair shop for inspection.