Quote:
Originally Posted by Pottsy
Because a cold engine wears quicker, and gentle driving warms the engine much faster than an idling engine. It applies to both new and run in.
It won't be the end of the world to leave it idling when cold, it's just not a good habit (especially in the diesel, which barely warms up at all at idle).
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Would reving the engine on a stationary car to 2-3k help or does it need to be driven to heat up better?