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#5
21-12-03, 09:25
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JD,
In fire trucks and other emergency vehicles, they are usually fitted with coolant heaters that are hooked up to mains power supply, in order that the engine is warm before moving off. I am only thinking that in a case of a crash truck, ambulance or similar on an airstrip without electric power, this would be an ideal part of the equipment. This is purely guesswork, but until someone comes up with the right use........ Richard 
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