What items do you need for the fourth maintenance of Buick LaCrosse?

1, the fourth maintenance cost of Buick LaCrosse provides the following reference: the fourth maintenance cost of 23,000 kilometers 1829 yuan, of which the man-hour 680 yuan, including oil replacement and machine filter, costs 100 yuan; Clean the fuel injector, throttle and air inlet 350 yuan; Four-wheel brake maintenance 200 yuan; Computer room maintenance 30 yuan. Other materials cost 1 149 yuan. 2. Four Treasures of the Study of Buick LaCrosse can clean the nozzle, throttle and air inlet according to the vehicle condition and driving conditions. Don't always trust 4S stores, you should judge for yourself. Keep running at high speed, the road surface is clean, and you don't need to clean the fuel injector, throttle and air inlet first.