Quote:
Originally Posted by hulkrogan
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When you idle a cold engine you are going through thousands of revolutions more with cold oil, causing excess wear. The guideline to warm up a modern gasoline engine is to give it about 30 seconds so the oil can circulate to the valve-train, and then start driving gently.
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30secs on a normal day. Keep your rpms below 3000 until your car has warmed up. Everyone on my block are
Pedal to the metal every winter morming, idiots. They dont realize that it will only do more damage than good in the long run.
In cold winters, here, you definitely cant take off in 30secs on -25 days. It takes my car that long just to drop the idles below 1500. Never take off until the car has idled down, for me its below 1500. When you first start a car it idles fairly fast then slows a bit and you should never take off until it reaches that point, warming up the car for 5mins doesnt harm anything but 15mins is way too long. Plug in your car in winters and itll get a headstart in getting up to temp a lot quicker, cutting your warm up idle time in half. Also, it the days of carbs, letting it sit and idle while running a little rich would allow unburned fuel to wash down the cylinder walls removing oil and causing undo wear.
People ask why i bother plugging in my car in -5 weather, thats so its less stress on the components itself, and cuts the time it takes to warm up in half.