The problem with the car is that when driving in first gear on urban roads, it occasionally has difficulty shifting gears. The car is one and a half years old and has run 12,000 kilometers. Automobile logo

The first time I went to the 4s store, the mechanic changed the gear oil and said that if the car still didn't work after running, it might be a transmission problem. The next day, I found that after starting the car cold, the first gear still had occasional difficulties in shifting gears when driving on urban roads. So I went to the 4s store again. Another mechanic tried the car. There was no problem during the test drive. He said to run it again and see. If there was still a problem, he would first consider changing the gear line. The possibility of problems with the machine and the gearbox is very small.

After returning, I drove nearly 100 kilometers, more in the urban area. I found that the first gear had returned to normal. So what the 4s driver said makes sense. The possibility of a normally used machine having a problem is very small. It should be due to the gear oil not being replaced in time.

Problems still occur right after changing the oil. It might be that the new oil has not fully seeped into the transmission components and completely replaced the old oil. This indicates that the newly changed transmission oil also needs a simple running-in process.

Here I would like to remind all car owners that you must change the gear oil in time. After this incident, I think the gear oil should be replaced every 10,000 kilometers. Don't wait until the car has difficulty shifting gears to remember.

When I was changing the oil in my car, the gear oil that flowed out looked golden yellow, almost opaque, somewhat like the color of gold powder paint, but a little lighter, indicating that there were a large amount of metal shavings in the oil. The new oil is light yellow, clear and transparent.