2019 525i 20,000 maintenance

  8
 July 30, 2024
After driving for more than ten years, this is my third car. I used to contribute a lot to 4S stores, but later I gained a lot of knowledge about cars and really thought cars were not so delicate. Since the current car was licensed, I have given up the noble service of the 4S store. Since the first guarantee, I have always gone to a certain store myself, bought parts from a certain treasure, and followed the suggestions of the BMW website for maintenance.
This time, for 20,000 kilometers, a certain treasure contacted a seller who ordered 4S accessories in Beijing and made a bet. After receiving the goods, we found that the quality was good, the label was clear, and there were domestic and imported parts. Looking at and touching it, I feel that it is authentic.
According to the website’s recommendation, 20,000 should be replaced: engine oil, engine oil filter, air filter, air conditioning filter, gasoline filter, spark plug. So I bought them all. Then I bought a four-filter replacement service at the Beijing Car Fair. It was not expensive. I replaced it all at 129 yuan. This price is indeed cost-effective in Shenzhen. The car factory, equipment, and construction procedures are all very formal, and the factory looks very clean. The key point is that two Porsche Cayenne cars and an X4 car are also repaired in this store, which makes people feel that it is indeed a shop that started with technology. I really don’t feel at ease with the store. If I repair Hongguang for a long time, I might not mess with BMW. Moreover, the store may lack computers and cannot eliminate BMW’s maintenance warning lights.
I brought all the materials. After arriving at the store, my brother looked at the mileage and strongly recommended that I not replace the spark plug. He said that the original 5-series spark plug would be considered after 40,000 kilometers. He also said that the gasoline filter element could actually be replaced after 30,000 kilometers. Later, I left the spark plug, but I still replaced the gasoline filter, removed the old parts, and poured the gasoline inside. There was no dirt at all. It was a good waste of an original car part. Finally, I packed this old piece and went home, preparing to cut it in a few days to see what the state of 20,000 kilometers of gasoline filled with BP95 for a long time would be. The air filter that was removed was indeed a little dirty, so it would be more suitable to replace it. I usually only open internal circulation, but I didn’t expect it to be so dirty. It was too dirty. I didn’t want to go to the trash can, so I didn’t take photos.

MAHLE brand, Austrian oil filter

Forgot to take a photo of the packaging box, forgot that it was made in China. It was not made by Brilliance, but the packaging box had a yellow label sealed by Brilliance Shenyang, which looked the same as the old model.

French-made championship spark plugs and wanted to buy NGK at first. The seller checked the frame number and determined that the original car was equipped with French championship iridium platinum spark plugs, so I listened to the seller.

The air-conditioning filter is also foreign, but the origin of origin has been forgotten, and I don’t recognize this brand yet. The 5 Series requires two pieces, which is a little expensive but much cheaper than a 4S shop.

The air filter is made in China. It seems to be MAN brand. I didn’t see the logo.

A full box is ready to start work. The engine oil is a US-made 5QT (4.73 liters) 5w-30 fully synthetic +1QT vial purchased by Jingdong Wal-Mart. The workers did not open the small bottle of engine oil, and only a few drops were left in the large bottle. They all said that it had been added to the standard position and there was no need to add a small bottle.

Looking at so many air conditioners in the workshop, you can feel that the workshop is huge.

Idle before oil change

Idle speed after 5 minutes of ignition after changing oil. It feels the same. When I bought a new car, the idle speed was around 750. It’s not as quiet and slippery as a new car now.