A perfect example... my neighbor has a new Scion Xb (with exhaust lol), never lets that thing warm up at all. Its not even a year old, and that poor motor sounds like CRAP, no doubt due to the stress of starting it up and driving off immediately w/o proper oil lubrication. Put it this way... my other neighbor's diesel VW has a quieter sounding engine. When its cold out, let the car warm up a few minutes, simple as that. I cant stand watching idiots fire up their car on 0 degree mornings and drive off like a bat out of Hell. That poor, poor, poor engine.