Let’s start with the conclusion. The differential oil and four-wheel drive oil of Tiguan’s four-wheel drive do not need to be replaced, which is maintenance-free. If you must change it, you can change the front differential oil at most. 75-90 manual transmission oil is 150 yuan, and the working hours are 50 yuan, and it will be 200 yuan.
After 100,000 kilometers, the car was considering changing the differential oil and four-wheel drive oil. I asked the 4s shop, but I didn’t know. I asked many personal repair shops and said that there was no need to change it. After checking the instructions for use, it seemed that 60,000 kilometers needed to be replaced. After searching the Internet, many students had replaced it at 60,000 or 100,000 kilometers, but some said they didn’t need to change it or all of it.
Judging from this replacement experience, the old oil for the front differential is slightly brown but clean and translucent, while the oil for the rear differential and four-wheel drive are clear and transparent, exactly the same as the new oil. Tiguan’s timely four-wheel drive is completely different from a full-time four-wheel drive. Personally, if you drive a Buddhist system at ordinary times, you can never change it for life. With a little speed and passion, it is best to change the front differential within 200,000 kilometers, and the rear differential and four-wheel drive are still Not considered for the time being. For those with four-wheel drive frequently used, the front differential will be considered for replacement at 100,000 kilometers, and the rear differential and four-wheel drive will be considered for 200,000 kilometers. My driving style is the second one. Changing it now will be a real waste of money.
I also replaced the spark plug, antifreeze and oil. The spark plug has been opened for 60,000 kilometers and is covered with thick white carbon deposits. The center pole has a great loss. The master said that in addition to the quality of gasoline, the key is excessive carbon deposits caused by burning oil. It is recommended to replace it for 40,000 kilometers. Add regular gasoline at ordinary times and use more additives. If there is no carbon deposit, 60,000 yuan is not impossible. In fact, I now use 130,000 pea per box of oil. Before maintenance, I put 1-2 bottles of Chevron clean model. I also use three pieces of Remo Fuel. I am speechless when the carbon deposits are still so serious. Before this maintenance, the Limo machine oil scale remover was used, which should be able to release the piston ring and improve the burning of oil.
The antifreeze has been used for 4 years, and 50,000 kilometers should be replaced. The master said that if the antifreeze leaks, it needs to be added frequently, and it can not be replaced for life. A total of 4.5 liters were used for replacing it. I used a high-pressure air gun to blow the radiator. It was too dirty. When the fire was turned off in summer, even if the water temperature was 90, the cooling fan could run for 2-5 minutes. Of course, the most thorough way is to remove the bumper and rinse it repeatedly with a water gun.
In the end, I paid the bill. The man-hours for two differentials and four-wheel drive were 200, the man-hours for oil changing was 100, the man-hours for antifreeze changing was 150, and the four spark plugs were replaced was 100 yuan. A discount of 520 yuan was paid. Compared with Jingdong and Taobao, the installation fees are much more expensive, especially spark plugs, which Jingdong operates for 5 yuan each. It was also to spend money to buy peace of mind. After all, the work was done carefully and at a certain level. I was really afraid of barbaric maintenance.