What type of engine oil should be used for BMW 520?
1 Answers
BMW 520 should use Castrol SM5W-40 fully synthetic engine oil, as this type of oil can better unleash the performance of BMW vehicles. Below is an introduction about refueling: Steps for refueling a car: Drive the car into the gas station, locate the corresponding fuel filler port, roll down the window, and turn off the engine. Open the fuel tank valve and inform the staff about the suitable gasoline type. Select the required amount of fuel to be added. After refueling, ensure the fuel cap is closed before restarting the engine. Precautions for car refueling: Avoid waiting until the fuel warning light comes on before refueling. Since the fuel pump is located inside the fuel tank, it operates at a high temperature continuously, and being immersed in fuel helps to cool it down effectively. When the fuel light comes on, it indicates that the fuel level is already below the fuel pump. If you always wait until the light comes on to refuel, it will shorten the lifespan of the fuel pump. Having too little fuel or running out of fuel may even burn out the fuel pump. Try to avoid refueling immediately after the gas station has just received a fuel delivery. This is because there are always some water and impurities settled at the bottom of the fuel tank. During fuel delivery, these water and impurities can be stirred up and mixed with the fuel. If such contaminated fuel is accidentally added, it can clog the fuel lines and cause damage to the vehicle's engine.
