Should the Verano turbocharged engine use 92 or 95 octane gasoline?
2 Answers
The Verano turbocharged engine should use 95 octane gasoline for better anti-knock performance. 95 octane gasoline consists of 95% isooctane and 3% n-heptane. When the engine has a high compression ratio, high-octane gasoline should be used. Using low-octane gasoline in a high-compression ratio engine can cause abnormal combustion, leading to knocking, increased fuel consumption, and reduced driving power. The Verano is a compact car under SAIC-GM Buick. It measures 4723mm in length, 1802mm in width, and 1466mm in height, with a wheelbase of 2700mm. The body type is a 4-door, 5-seater sedan, and it comes with a 6-speed automatic transmission.
When I was using this Verano, it was the turbocharged version, and the salesperson specifically emphasized the need to use 95-octane gasoline when I bought the car. I checked the manual, which clearly states that 95-octane is recommended because turbocharged engines operate under high pressure, and higher-octane fuel helps prevent knocking, ensuring smoother engine operation. If you use 92-octane, although you might save a dollar or two per liter, over time it could lead to increased fuel consumption, reduced power, or even damage to engine components. Once, I tried using 92-octane in an emergency, and the noise increased noticeably, while acceleration felt less responsive. Switching back to 95 restored the smooth performance. I suggest not cutting corners—follow the manufacturer's recommendation and use 95-octane to prolong your vehicle's lifespan.
