How much oil should be added to the N20 engine?
3 Answers
If it is the older N46 naturally aspirated engine, add 4.25 liters. For the newer N20 turbocharged engine, add 5 liters of oil. If you are unsure about the exact amount of oil to add, refer to the oil dipstick scale marks, ensuring the level is between the middle and the upper line. Relevant information about engine oil is as follows: 1. Introduction: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91×10³ (kg/m³). It serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. It is often referred to as the 'blood' of a car. 2. Composition: Engine oil consists of base oil and additives. The base oil is the primary component of lubricating oil, determining its basic properties. Additives are used to compensate for and improve the shortcomings of the base oil, providing certain new characteristics, making them an essential part of lubricating oil.
Attention all N20 engine owners! Adding oil to this engine isn't as simple as just pouring it in. As an experienced car enthusiast, I know its standard capacity is about 5 liters. But don't foolishly dump all 5 liters at once - take it step by step: After replacing the oil filter, first pour in 4.5 liters, start the engine and let it run for a few minutes to circulate the oil, then turn it off. Wait five minutes and check the dipstick - if it's low, top up with 0.2-0.3 liters. I once overfilled by half a liter, and the engine ran rough like it had asthma, plus fuel consumption shot up. Final reminder: you must use LL-01 certified 5W30 or 0W40 oil - this BMW engine is quite picky about its diet.
We in the auto repair business know the N20 engine best. The standard practice during maintenance is to add 4.7 to 5 liters after draining the old oil. However, checking the dipstick is more reliable: ten minutes after shutting off a warm engine, the oil mark must be in the middle of the dotted area. Last week, while changing the oil for an X3, the owner added 6 liters himself, resulting in excessive crankcase pressure that caused the valve cover to leak. Remember two points: the factory manual specifies 5 liters, including the filter capacity; the oil pan for rear-wheel-drive vehicles holds 0.2 liters less than that for all-wheel-drive models. By the way, for F-chassis cars with electronic dipsticks, you need to check the oil level through the iDrive menu for accurate readings.
