Originally Posted By: NightHiker
Pile snow/allow it to drift up around the bottom of the vehicle (keep the exhaust pipe clear if you're gonna run it). This will help reduce the heat lost to conduction.
I think you mean convection? The snow will stop the wind from carrying away from heat (i.e. convection).

Piled snow will actually cause more heat to be lost by conduction (assuming the snow is actually touching the vehicle and that the interior of the vehicle is warmer than 32F/0C).

HJ
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