Should the new BMW 3 Series use 95 or 97 octane fuel?
1 Answers
BMW new 3 Series uses 97 octane. Gasoline octane rating: Gasoline octane rating is the ratio of the actual gasoline's anti-knock performance to that of standard gasoline. The higher the octane number, the stronger the anti-knock performance. Standard gasoline is composed of isooctane and n-heptane. Higher octane numbers are not necessarily better; the appropriate gasoline octane should be selected based on the engine's compression ratio. Gasoline type selection: The type of fuel to use should follow the manufacturer's recommended specifications. If the recommended type is 93 octane, then 93 octane is sufficient. In emergency situations, 97 octane can be used. It is not recommended to use 97 octane fuel for a long time, as prolonged use of higher-grade gasoline can also damage the engine. However, occasional emergency use has negligible impact. If the recommended type is 97 octane, then 97 octane must be used. Using 93 octane will shorten the engine's lifespan and may even damage the ignition system.