In the past, I always felt that Carola’s CVT stepless gearbox did not need to be maintained for life, and many people around me transmitted this idea to me that the stepless gearbox did not have to be maintained and changed oil for life, so I did not change the oil even after running more than 100,000 kilometers. So far, my engine and gearbox are in good condition, and most of the maintenance is done in the Yifeng 4s store where I buy the car. The oil I often maintain and change is Toyota pure brand 0W20 oil, and the engine air filter element is also Toyota pure brand, and I regularly buy bottles of carbon cleaner in the fuel tank at an interval of 20, 000 kilometers. Because I still cherish the car, sometimes I may drive to other places to stay for a period of time, so I occasionally change the oil in some local fast insurance stores. After I bought a car, I drove this Corolla, and it felt good, so later I introduced my friends and bought a Toyota. We both had the wrong car for a year, but we both drove the same mileage, because my friend’s car often runs long distances. But a few days ago, my friend suddenly called and asked me to drive him to the Auto Trade City, because his car was lent to relatives for a day to do business, and then the car suddenly stepped on the accelerator and never left again, so the car was later towed to a repair shop in the Auto Trade City. and the repair shop checked that the gearbox should be broken, but also need to take apart the gearbox to check. After we got there, the gearbox took apart the oil pan, and almost everyone at the scene was shocked. The chain in the CVT gearbox was broken, because there was no power transmission of the chain, so even at the accelerator, the car’s gearbox would not run even if it was broken. Later, because the cost of repairing the gearbox was too high, the repair shop even the man-hour fee and the gearbox accessories and oil cost about five or six thousand yuan, but fortunately, the relatives of my friends also had a certain relationship. I didn’t know where to get a CVT continuously variable transmission of the same model that looked good when the car was dismantled. Finally, the car was repaired. Through this matter, I think that since the CVT stepless gearbox is mechanical, it must need maintenance to run for such a long time, knowing that it is impossible for the mechanical parts to work to produce zero friction, not to mention that the car runs at such a high speed, sometimes the load is particularly heavy and the time is long, the oil inside will definitely deteriorate, and it will not play such a good protective role as when the new car is used. So I consulted some car repairmen and some after-sale professionals, and finally decided to change my car to CVT continuously variable transmission oil. Since I have run so many kilometers, I should take good care of it. And because the original car used so much mileage is no problem, so this maintenance or decided to go to Yifeng 4S store to change oil, using Toyota pure brand CVT infinitely variable transmission oil. The change of transmission oil used a total of two barrels of Toyota pure brand CVT stepless transmission oil, and the 4S store does not need to disassemble the oil pan, even with the gearbox oil circulation machine to replace, in fact, I am not willing to disassemble the oil pan, and the effect of this method of changing oil also looks good, it is obvious that the new oil goes in from the transparent pipe, and the black old oil circulates out from the transparent pipe. This time, I think the oil change is still very thorough, and the two Toyota masters who work for me are also skilled and professional, and the whole car is checked once after the oil change.