Should the Dongfeng Peugeot 408 use 92 or 95 octane gasoline?
2 Answers
The Dongfeng Peugeot 408 uses 92 octane gasoline. Not recommended to switch gasoline: Generally, it is not recommended to switch to a gasoline with a lower octane rating than the standard specified in the vehicle's manual. Using a lower octane gasoline can cause premature combustion, leading to engine knocking. Additionally, incomplete combustion of the gasoline can result in increased carbon deposits, which may clog the fuel injectors and intake valves, leading to fuel supply interruptions and engine stalling. Follow the recommended fuel: In summary, for your vehicle, always use the gasoline octane rating printed on the fuel tank cap or a higher one, but avoid using a lower octane rating. For example, a car that requires 92 octane can use 95 octane, but a car that requires 95 octane should not use 92 octane.
I've been driving a Dongfeng Peugeot 408 for several years, so let me share some insights about refueling. This car is recommended to use 95-octane gasoline because its higher octane rating matches the engine design and reduces that knocking noise called detonation. While 92-octane is cheaper, you might notice slightly slower throttle response when using it, especially with the AC on during summer. I've checked the owner's manual, which clearly states 95-octane as the preferred choice for longer engine life and fewer unnecessary repair costs. I always fill up with 95-octane at major gas stations—don't cut corners by going to smaller stations where inconsistent fuel quality can cause issues. If you occasionally use 92-octane, don't panic, but avoid prolonged use to prevent excessive carbon buildup and oil burning. In short, following the manual is always the right choice—it's both safer and more economical.
