Why do London cabs cover their radiators during the winter?

Question by fragglechopsuk: Why do London cabs cover their radiators during the winter?

The owners of a lot of cabs seem to place a piece of plastic or other material over their radiators during cold weather? Is this to improve fuel economy by keeping the engine warm, or is there an inherent design fault?

Best answer:

Answer by Wildcat747
Its so the heater will keep you warm and it could keep the heat in the engine to keep from using the choke so much.

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