
BMW 520 requires 4.5 liters of engine oil. The functions of engine oil are: to circulate carbon deposits, sludge, and worn metal particles from engine components back to the oil tank, and to flush away dirt generated on the working surfaces of parts through the flow of lubricating oil. Taking the 2017 BMW 520 as an example, it belongs to the mid-to-large-sized car category with body dimensions of: length 5055mm, width 1860mm, height 1491mm, wheelbase 3108mm, and fuel tank capacity of 70 liters. The 2017 BMW 520 features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine producing a maximum horsepower of 184PS, maximum power of 135kW, and maximum torque of 270Nm, paired with an 8-speed automatic transmission.

I've been driving a BMW 520 for several years. For the engine oil capacity, it usually takes around 5.5 liters, but I recommend referring to the owner's manual or BMW specifications, as there might be slight variations between different engine years. For example, the N20 engine in the 520i requires approximately 5.25 liters, while the 520Li might need a bit more, up to 6 liters. Never estimate randomly. Overfilling can cause overflow and lead to engine overheating, while underfilling affects lubrication and causes wear. I always check the dipstick level before refilling—it's more accurate when the engine is cold—to ensure the oil level stays between the min and max marks. Also, remember to use suitable 0W-30 or 5W-40 oil with low-ash certification as required by BMW to avoid damaging the emission system. Regularly checking the oil level every 10,000 kilometers is a good habit to prevent major repairs.

From my perspective as an ordinary car owner, checking the oil capacity for a BMW 520 is actually quite straightforward. It typically ranges between 5 to 6 liters, and my own car takes exactly 5.5 liters after each maintenance service. The easiest method is to refer to that thick owner's manual of yours - the specific value can usually be found in the maintenance section. Don't just rely on generic online recommendations. While different engine versions like the 520d or 520i have minimal differences, overfilling can cause oil to seep into the cylinders, wasting money and polluting the environment. I always remind my friends to have technicians completely drain the old oil during oil changes before adding new oil to ensure a clean pump. Both the physical dipstick and electronic oil level display in the car are convenient - just wait 2 minutes after starting the engine before checking for accurate readings. Developing a habit of checking every six months saves both hassle and money in the long run.

When it comes to oil capacity, the BMW 520 typically requires about 5.5 liters, but it must be personalized. I recommend checking the manual before adding, as different engines like the B48 type may specify more precise values. Adding oil randomly can easily cause problems. Use standard 0W-30 oil and avoid inferior products. Regular checks are crucial.


