machinery is the most "fat" place, because the quality of mechanical devices, whether or not to refurbish, do not understand the practice of you can not see! In some products, take good parts and combine them into new ones, then clean and hurt them. Use them when you have a car to change this piece.
3, circuit.
circuit means there's something wrong with it, there's something wrong with it. Cylinder line 100 more than one, almost looked at the proposed replacement. The rich do not care about it. Just 4 at a time, and leave them to other cars.
4, brake.
suggest that you change the brake pad, or the brake disc, when you find the car's braking force is down. In fact, as long as the detergent is washed, the brake fluid can be changed.