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No matter how long you leave a diesel engine idling to warm up, it wont, you are just wasting fuel and in the long run damaging the engine. Rather driver off at a low speed, changing gear before the turbo can startup, this will give you the fastest warm-up time. If you drive at a speed where the turbo is switched on, the cold air from the intercooler will flow into the motor and increase the time the motor takes to warm-up. Hope this helps.

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17y ago

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