1. General 20,000 km WASH once
In terms of rhythm, or frequency, the general situation is 20,000 km cleaning so once.
2. Contamination or congestion can be cleaned in advance
If it is more serious air pollution, or our friends in the north, one to winter PM2.5, a variety of coal ash, this can be 10,000 to 15,000 kilometers to wash once.
Or our eastern coast, or Guangzhou's friends special blockage, often walk and stop, it may also be 10,000 kilometers to wash once.
On the whole, every time you say, sir, do you want to pay more than 300 dollars to clean the throttle, it is absolutely not reliable, in general, we 20,000 kilometers to start thinking about this problem is not too late.