What type of gasoline should a BMW 325 use?
3 Answers
BMW 325 manufacturer recommends using 95 octane gasoline. Refueling method for BMW 325: Pull the fuel tank cap switch in the left control area of the BMW 325 steering wheel, unscrew the fuel tank sealing cap, place the fuel tank sealing cap on the fuel tank cover after removal, then insert the fuel nozzle into the fuel tank and begin refueling. When the fuel nozzle is cut off for the first time, the fuel tank is full; continuing to refuel will fill the expansion chamber in the fuel tank with fuel. At this time, do not immediately remove the fuel nozzle, but leave it at the fuel filler port for 5 seconds to allow all the fuel to drain into the tank. Reasons for using 95 octane gasoline in BMW 325: BMW 325 is recommended to use 95 octane or higher gasoline because the oil has better anti-knock performance, burns more completely, is less prone to carbon deposits, and the car's power acceleration response is relatively faster.
I've been driving a BMW 325 for three years and always fill it with 95-octane gasoline. The car has strong power, quick acceleration, and the engine doesn't shake at all. Once, I tried saving money by using 92-octane fuel, but the car felt sluggish, fuel consumption increased, and the malfunction indicator light almost came on. The BMW manual clearly recommends 95-octane gasoline because the engine has a high compression ratio, and lower-octane fuel can cause knocking, which damages the engine. Severe knocking can lead to repair costs of tens of thousands, which really isn't worth it. I often go to reputable gas stations to fill up with branded 95-octane fuel, as it's cleaner and causes less carbon buildup. During routine maintenance, checking the fuel tank and spark plugs is also crucial. In short, sticking to 95-octane fuel is the best way to care for your car—don't invite big trouble by trying to save a little money.
The octane rating directly affects vehicle performance. The BMW 325 engine has a high compression ratio and requires 95-octane gasoline to prevent knocking. Knocking occurs when gasoline ignites prematurely in the cylinder, causing engine vibration, reduced power, and even component damage. 95-octane fuel has strong anti-knock properties, ensuring complete combustion and stable fuel consumption. Using 92-octane gasoline may save money in the short term, but over time, it increases engine carbon deposits and reduces efficiency. It is recommended to refer to the fuel cap or manual instructions, with 95-octane being the safest starting point. Gasoline quality is also crucial; choosing reputable brands reduces impurities. Regular maintenance of the air filter helps maintain higher combustion efficiency.
