Dear Tom and Ray: My son, 16, bought a ’77 Pontiac Grand Prix. It’s loud, with a big motor (muscle-car-type motor, original everything). Anyway, he sawed off the exhaust pipe to make it even louder, ...

The exhaust on my sportbike was starting to look like crusty lines of crap left by a camel in the Simpson Desert. But I can't afford new pipes, so I started looking for "preservation" solutions. That ...

There's a lot going on inside your vehicle at any given time, whether you're idling at a red light or driving at freeway speeds. Much of this activity involves chemical reactions that — while ...