Volkswagen has been working hard to make its automatic transmissions more efficient. They shift faster and more smoothly than ever before. Let’s see what we can do to keep it that way.
Since 1996, OBD II regulations have required that the fuel supply system be checked for leaks as small as .020 in. As fuel is used, air must be allowed into the tank to prevent a vacuum from forming. But how do we help prevent fuel vapors from escaping.