A:Answer Hello Slim - Thank you for the questions. Each of the spray tips has a different spray pattern. Before starting any cleaning job, determine the best spray tip for the job. The following chart offers some general guidelines to help you choose the best spray tip for your application. 25º – green nozzle: Uses a medium angle of spray for washing sensitive and soft surfaces (deck, fence, aluminum etc.) 40º – white nozzle: largest angle of spray used for cleaning surfaces quickly and for rinsing. Turbo nozzle rotates in a zero to 15-degree spray pattern in a circular motion to break down tough dirt and grime. The spray pattern can cover area of 4 to 8 inches wide, depending on a distance between the tip and the surface being cleaned. When using the pressure washer for the car, it is always best to start with a plain water rinse to remove any loose mud, salt, or bugs. For this, you will want a 25 (green) or 40 (white) degree nozzle. Do not go any lower than that. You will risk damage to the paint with a 0- or 15-degree nozzle. Please test out the spray nozzle before use to choose the right spray for the job.