I have never been able to convince any of my co-workers that leaving the car to idle for 5 minutes to warm up is not a good idea. They just cannot understand when I explain to them that it's better to get going after only a few seconds but keeping the engine load low. I try to explain to them clearence tolerances and such but all they've ever heard is "warm your car up before driving". You don't happen to have a link to a reputable publication that they can read and I can finally get them to stop thinking I'm an idiot [rofl]