What is the best way to warm your engine when it is first started? I used to hear that it was best to let it idle for 2-3 minutes before driving. But then I heard that using that method produces a build up of something that doesn't get burned of when the engine isn't hot. So instead I have been letting it idle for about 30 seconds and then driving it without reving over 2000rpm until the engine temperature rises withing normal operating range. Do you have any ideas on which method is best?

As efficient as the newer engines are, they were built for the general public and I don't think they are affected that much either way.

Tom,

Living much closer to Duluth, MN than Duluth, GA, I have some experience with COLD starting. The answer is engines with fuel injection are so good and efficient, you really don't need to let the engine warm up. Just let the car reach a steady idle after start up (a few seconds is usually enough) and just don't drive like a drag racer until the engine is warmed up. What you are presently doing sounds just fine (I'd say you could go a little higher than 2,000 RPM too).

During cold weather starts, there will be unburned fuel and mosture that works it's way to the engine and the oil. This is why it is especially important to have oil and oil filter changes during cold weather (every 3K miles would be fine with most engines, perhaps you could go a little longer).

Heated seats are a big plus too, if you know what I mean.

From what I learn from a friend who works on exotics, he suggested that, during a cold morning, start up the engine, wait 'til the idel comes down to normal, let it run for 10sec or so. Then you can drive away, but don't rev the engine or push the car as the oil is getting suck up, and the engine will reach its working temp very soon, and mean while, cut down on the emission, and save the environment.... :)

Once the engine has reach its working temp, you just drive as usual(or anyway you prefer).... :)

Happy Motoring....
Andy Kuo

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<LI>1992 Mercedes-Benz 400SE
<LI>Moonstone Grey/Black Leather
<LI>Blue/Red Headlights
<LI>Xenon-Look Foglights
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