What kind of engine oil should be used for BMW 7 Series?

2 Answers
PrestonAnn
07/25/25 3:10pm
BMW 7 Series should use engine oil with the specification of 0W40, and the brand is BMW. If you want to change the engine oil during later maintenance, you can choose brands such as Mobil and Castrol. The viscosity of engine oil will change 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 low temperatures of -30°C. The smaller this number, the better the low-temperature fluidity, and the smoother the cold start of the car will be. The latter number represents the kinematic viscosity of the oil at 100°C. The higher the value, the better it can 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 of BMW 7 Series is as follows: Wait for the engine temperature to drop, and also allow the engine oil to flow back to the oil pan; Use a wrench to loosen the oil drain plug, and use 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 engine oil to the oil seal of the new oil filter, and tighten it clockwise by hand; Add the new engine oil through the oil filler cap on the engine valve cover, generally filling about three-quarters of a barrel; Start the engine and let it run for 5 minutes, then check for oil leaks at the oil drain plug and oil filter. If there are any, repair them; After stopping the engine, pull out the oil dipstick and check that the engine oil level is within the standard range.
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SanRobert
08/11/25 9:21pm
I've been driving a 7 Series for five years, and choosing the right engine oil is crucial. BMW engines are precision machines and require oils with BMW Longlife certification. For older models, use Longlife-01 (such as Mobil 1 Gold 0W-40), while post-2018 models need 0W-20 low-viscosity oil with Longlife-17FE+ certification. Last time I cheaped out and used regular full synthetic, the engine noise became noticeably rougher. Switching back to the original Shell Helix Ultra 5W-30 restored smooth operation. Honestly, the manual is the best guide—B48/B58 engines should use 5W-30, and 0W-30 is recommended for northern winters. Never fall for repair shops pushing high-viscosity oil; BMW's precision components won't tolerate it. Also, remember to have the technician reset the vehicle's maintenance reminder after an oil change, or the system will keep nagging you.
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