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Some small cooling systems can be quickly overcome by cold air rushing thru an open grill; This is why you will sometimes see 'winterfronts' on some vehicles. Even cardboard in front of the grill will help.Make sure your radiator is full; even if it is a little low it will make a huge difference in it's ability to maintain heat as cold air rushes thru it. I hope this helps you. Mark

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19y ago

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