How does air get into the brake system?
How does air get into the brake system? Well, unfortunately, air does get into the reservoir over time and it eventually makes its way into the rest of the braking system -- including your brake lines. Every time you open the cap to check your brake fluid level, you're letting air into the system. Do you need a good air brake system? ** The air brake system of a trailer is entirely dependent upon the air brake system of the towing vehicle for its air supply and control. Therefore, the air air brake system of the towing vehicle must be...