Specifications include, but are not limited to: 2.1.1 Washer solvent shall be provided in the diluted state and the solution will be used unadulterated as delivered. 2.1.2 Solution shall not freeze upon the glass surface at a temperature of -20ºF. 2.1.3 The diluted solution shall be no more than 40% methanol by volume. 2.1.4 Solution shall have no adverse effect on painted surfaces, rubber moldings or plastic. 2.1.5 Solution shall not leave any streaking on the glass surface when removed. The solution shall not create a distorted vision due to sunlight or oncoming vehicle headlights when the solution has been removed from the glass surface. 2.1.6 Windshield washing solution shall be provided and delivered in fifty-five gallon, non-returnable, plastic drums. 2.1.7 Appearance shall be a clear blue liquid.