The biting cold of a winter in North Dakota can take its toll on the toughest mobile equipment where average temperatures in January are -14C (7F). In the Albertan oil patch the harsh conditions push the average temperature in January down to a nger numbing -20C (-4F). When operating a vehicle mounted air compressor outdoors in the extreme cold you must have the proper protection for safe operation and to maintain optimum performance. This guide will help you become aware of the three most common and important mistakes mobile mechanics make during the winter months and how to avoid them. It also outlines some easy maintenance tips that will ensure optimum performance in extreme cold.