How much engine oil does a BMW 525 need?
2 Answers
BMW 525 generally requires about 5 liters of engine oil. If performing a gravity oil change, approximately 4.5 liters of oil is usually sufficient, as gravity drainage cannot completely remove all old oil, leaving some residual in the oil pan. Precautions for oil change: 1. Hot oil drainage: Oil flows better when warm, allowing more complete drainage from oil passages. Be cautious of excessive heat to avoid burns. 2. Dipstick: The oil level must be strictly maintained between the lower and upper marks on the dipstick. 3. Additives: Common engine oil additives include antioxidants, anti-wear agents, detergents, dispersants, foam inhibitors, and anti-corrosion/rust inhibitors. Factory-blended oils already contain these components in optimized ratios - avoid arbitrarily altering oil formulations to prevent unpredictable consequences or damage.
I just changed the oil for my friend's BMW 525. Generally speaking, this model is equipped with a 2.0-liter turbocharged engine, and the oil capacity is approximately between 6.5 to 7 liters, depending on whether you replace the oil filter at the same time. Adding a new oil filter may require a bit more oil. Why is precision important? Because too little oil can cause the engine to overheat and increase wear, while too much oil can lead to foaming and higher fuel consumption, affecting engine longevity. I recommend checking the manual before each maintenance, as there might be slight variations for different model years—older models may require a bit more oil, while newer ones might be more streamlined. Also, don't forget to regularly check the dipstick; keeping the oil level in the middle is ideal to avoid major issues caused by incorrect oil levels.
