How much engine oil should be added to a BMW 520?
2 Answers
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.
