What type of gasoline should a BMW X7 use?

[AndersonMarie]

The BMW X7 is recommended to use 98-octane gasoline. 98-octane gasoline has higher purity and better anti-knock properties, which can more effectively promote the engine's internal performance. Differences between gasoline types: The main difference lies in the varying content of n-heptane and isooctane. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. 98-octane gasoline is a mixture of 98% isooctane and 2% n-heptane. Additionally, the gasoline octane rating represents its anti-knock performance—the higher the rating, the better the anti-knock properties. Precautions when refueling: Avoid waiting until the fuel warning light comes on before refueling. The fuel pump is located inside the fuel tank and operates at high temperatures during continuous use. Being submerged in fuel helps cool it effectively. When the fuel light comes on, it indicates the fuel level is below the pump. Frequently waiting until the light comes on to refuel can shorten the fuel pump's lifespan. Having too little fuel or running out of fuel may even damage the fuel pump.