What Octane Gasoline Should Borgward Cars Use?

[AngeloAnn]

Borgward models equipped with naturally aspirated engines require 92-octane gasoline, while those with turbocharged engines need 95-octane gasoline. You can check the manufacturer's recommended gasoline grade on the fuel tank cap when refueling. It is essential to choose the correct gasoline grade for your car. Most turbocharged engines require 95-octane gasoline because the temperature and pressure inside the cylinders are relatively high during operation. Note that using lower-grade gasoline can easily cause engine knocking, which is an abnormal combustion phenomenon harmful to the engine. Severe knocking can even lead to connecting rod deformation or piston explosion. Higher-octane gasoline has a higher octane rating and better stability. Knocking occurs during the engine's compression stroke when the intake and exhaust valves are closed. At this time, the piston moves upward to compress the combustible mixture. After compression, the temperature and pressure of the combustible mixture increase. If the gasoline's stability is poor, the combustible mixture may ignite prematurely. The burning mixture will push the piston downward while it is moving upward, affecting the engine's power output and fuel economy. Therefore, it is recommended to always choose the correct gasoline grade when refueling.

[EllaLynn]

I've been driving a Borgward BX7 for three years, and the manual clearly states that 95-octane gasoline is optimal. The turbocharged engine has a high compression ratio, and using lower-octane fuel can easily cause knocking, which can significantly damage the engine over time. When refueling, I always check the pump to confirm it's 95-octane. Occasionally, when traveling to remote areas where 95-octane isn't available, I'll temporarily fill up with a tank of 92-octane as an emergency measure, but I can clearly feel the throttle response become sluggish. During maintenance, the technician specifically reminded me that sticking to 95-octane can reduce carbon buildup and extend the lifespan of the spark plugs. Although I spend an extra hundred or so yuan on fuel each month, considering the potential repair costs, it's still more cost-effective to stick with 95-octane.

[DeFaith]

Having worked as a mechanic for over a decade, I've seen many Borgward vehicles with recommended fuel grades labeled inside their fuel filler caps. For turbocharged models like the BX5 and BX7, the manufacturer mandates using 95-octane or higher gasoline. 92-octane fuel lacks sufficient anti-knock properties. Although the engine ECU can adjust ignition timing to prevent knocking, this comes at the cost of reduced power output, especially noticeable during high-speed overtaking. Last year, a BX7 owner who consistently used 92-octane to save money ended up with three clogged fuel injectors after just half a year. I advise owners not to skimp on this - even the latest Borgward models still recommend 95-octane fuel.

[PresleyDella]

When I first got my Borgward BX5, I specifically checked the manual. Chapter 4, the fuel section, clearly states 'Please use unleaded gasoline with an octane rating of 95 or above.' The salesperson also showed me the sticker inside the fuel filler cap during delivery, which clearly displays the 95 rating. Once during an argument with a friend about this, I immediately took a photo of the manual and sent it to the group chat. Actually, using the wrong fuel once or twice isn't a big deal, but long-term use of lower octane gasoline can indeed harm the car, especially now with the widespread use of ethanol-blended gasoline, which makes it easier to trigger the engine malfunction indicator light.