
BMW 3 Series does not have a mechanical oil dipstick. The oil level is measured electronically and can be directly viewed on the central display to check the remaining oil quantity. Engine Oil Introduction: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91×10. It serves multiple functions such as lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. It is often referred to as the "blood" of a car. Engine oil consists of base oil and additives. Diesel Introduction: Diesel is a light petroleum product, a complex mixture of hydrocarbons (carbon atoms ranging from about 10 to 22). It is used as fuel for diesel engines. Diesel is primarily produced by blending diesel fractions obtained from processes such as crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, and petroleum coking. It can also be produced from shale oil processing and coal liquefaction.

I've been driving a BMW 320 for many years, and the oil filler location is quite easy to find. Typically, the oil filler is located under the hood. After opening the hood, you'll see a round or square plastic or metal cap, usually labeled 'Engine Oil' or featuring an oil drop icon, positioned near the top of the engine. When performing this operation, always ensure the engine has cooled down to avoid burns. Simply twist the cap counterclockwise to open it, then pour in the appropriate engine oil. I recommend using BMW-recommended synthetic oil grades, such as 0W-40, to protect the engine's longevity. Also, don't forget to check the oil level with the dipstick: park the car on level ground, pull out the dipstick, wipe it clean, reinsert it, and then check. Ensure the oil level is between the high and low marks, as levels too high or too low can affect performance. In routine maintenance, I check the oil condition every 5,000 kilometers or six months. If the oil turns black or has an unusual odor, replace it promptly. Regular maintenance helps prevent engine overheating and failures.

As a BMW owner, the oil filling point is located in the engine compartment. When you open the hood, you can immediately spot the round cap labeled 'Oil' near the main engine block. I always make it a habit to turn off the engine and wait a few minutes for it to cool down before carefully removing the cap. Using a funnel during refilling helps prevent spills. The dipstick is right beside it—just insert and pull it out to check if the oil level is sufficient. The BMW 320 has high oil requirements, and I find that full synthetic oil works best. Regularly checking the oil can prevent carbon buildup or wear, especially after long trips. If the oil level is low and not replenished, the engine can suffer severe damage. I set a monthly reminder on my phone for a quick and easy check. It's convenient to do in the garage, but if you're unfamiliar, always refer to the user manual or consult a professional technician first.

The oil filler cap of the BMW 320 is located under the hood. Lift the hood and look for the metal cap labeled 'Oil'. The position may vary slightly depending on the year, but it's mostly on the top right side. To check the oil level, use the dipstick by inserting it into the hole and observing the line position. Ensure the engine is cool before operating to avoid burns. When adding oil, I choose BMW-certified models and confirm the vehicle is level before pouring. Regularly, oil maintenance is crucial as it extends engine life. The oil change interval is approximately 6,000 kilometers, keeping it clean to prevent malfunctions.


