A method and system for carrying out vapor-phase lubrication of a component, such as a bearing for example, is disclosed herein. or above and is capable of sustained use as a coating under high to extreme temperature conditions. The method of the present invention and the fuel cell system of the present invention incorporate the recognition that a higher system efficiency can be achieved when the operating pressure produced by the air compressor is matched to the prevailing operating temperature of the fuel cell system. such as a glass substrate is used.