It has been three years and the total mileage is 70,000. let’s talk about my feelings, first talk about fuel consumption, save fuel, really save fuel, I have a lot of high speed, an average fuel consumption of 6 liters, then talk about BMW oil leakage, burning oil situation, so far on the B48 engine has not found, I was 12000 kilometers to change the oil, once ran more than 13000 to change, the oil also looks good, I used 0W30, replaced the air conditioning panel, cracks, said that the common fault Immediately released the insurance to change it, there is to eat the tire, the tire noise is big, really big, changed two rear wheels, 4S store replaced, engage in activities 3000 two tires send maintenance and four-wheel positioning, the right rear wheel eats the tire seriously, after positioning is the problem of the right rear wheel, adjust, run and have a look, by the way, the original car Pirelli P7 tires also use 70, 000 kilometers, now the two front wheels are not good, serious wear and tear It runs like a wheel bearing is broken and buzzing so noisy that you doubt your life. The gearbox oil is said to be replaced by 100,000, and the Zaifu manufacturer asks for 40,000 to 60,000. I feel that 70,000 is about the same, and gravity is recommended for all inquiries. So I began to inquire about Zaifu 8-speed gearbox oil in many ways. Ha ha, efforts live up to my efforts. Here, I would like to thank the car friends in the forum for providing me with Zaifu after sale. I got a very cheap wholesale price, and found a reliable repair shop for 200 yuan of man-hours, and the changed oil looked clear, but there were iron pins and slime on the oil pan of the gearbox. It seems that it is right to change the car. Gravity oil change is necessary for the next 130000 kilometers. Every time I change the oil pan, I also buy the rear differential oil DT of Zaifu, which needs to be replaced by myself. There is no drain hole. It took a total of 1 million yuan to replace the spark plug. Last time, the spark plug was replaced by 40, 000 spark plugs, using NGK94201. After removing it, I found that there was a big gap between the spark plugs. This time, I ran 30, 000, changed it, consulted several car mechanics, and all suggested a replacement of 30, 000 km. I listened to people who advised me to have enough to eat, and I replaced it myself. This time, the champion was bought on a certain east during the Singles Day holiday of 20 years. Through the actual measurement of 30, 000 km. NGK spark plug use absolutely no problem, not so exaggerated fuel consumption and so on (as soon as the fuel consumption is increased, running fuel consumption down) rest assured to use, but after two spark plug measurement, 30000 km change is the most reasonable, please do not spray me, do not say I burn too much money, I cherish the car, I need to keep the best condition for the car, this replacement champion OE245, the fuel consumption increased significantly after changing It is much larger than after the last replacement of the NGK, about more than 100 kilometers and consumes more than 1 liter. I have driven more than 1,000 kilometers, and the fuel consumption has gradually dropped. It seems that we need to adapt to the new spark plugs. I suggest that what brand of spark plugs should be used. My situation should have something to do with the change of the brand.

All right, let’s do these homework first. if you like to maintain your car on your own, get to know each other and add a friend to share your good experience. thank you. Please give me a good one.