What is the original engine oil model for BMW 5 Series?
2 Answers
BMW 5 Series original engine oil models include 5W-30 and 0W-40 for regular grade, 0W-30 for premium grade, and 10W-60 for special grade. Engine oil grades are represented by a combination of two letters. The "S" series represents oils for gasoline engines, with general specifications ranging from SA to SN (in alphabetical order, but excluding SI). The viscosity of engine oil changes with temperature, so special attention should be paid to its performance under low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity. 5W means it can withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, resulting in smoother cold starts for the car. The latter number represents the kinematic viscosity of the oil at 100°C. A higher value indicates better ability to maintain viscosity at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the engine oil in a BMW 5 Series is as follows: Wait for the engine temperature to drop, and also allow the oil to flow back into the oil pan; Use a wrench to loosen the oil drain plug and place an oil pan to catch the old oil until no more oil flows out. Start the engine and let it run for 30 seconds to allow the oil in the main oil passage to flow out; Use a special wrench to remove the oil filter; Apply oil to the oil seal of the new oil filter and tighten it clockwise by hand; Add the new oil through the oil filler cap on the engine valve cover, usually filling up to three-quarters of the oil container; Start the engine and let it run for 5 minutes, then check for oil leaks around the oil drain plug and oil filter. If there are any leaks, perform necessary repairs; After stopping the engine, pull out the oil dipstick and check that the engine oil level is within the standard range.
My 5 Series was purchased the year before last, and I've always insisted on using the original engine oil specifications 5W-30 or 0W-30. Both are recommended in the BMW owner's manual, mainly depending on whether you drive in the south or north. In places where winter temperatures drop below minus ten degrees Celsius, 0W offers better low-temperature fluidity. During my last maintenance, I specifically asked the 4S technician, who said the 5W-30 with BMW LL-01 certification is the most commonly used, providing excellent high-temperature protection without harming the engine. While conventional mineral oil can also be used, turbocharged engines are better off with full synthetic oil for peace of mind, and the oil change interval of 10,000 kilometers is perfectly fine. During daily driving, the throttle response feels smooth, and the oil temperature gauge remains stable within the normal range.
