A wash system includes a wash unit associated with a mobile unit for providing wash fluid, one or more nozzles for streamline injecting wash fluid provided by the wash unit directly into an engine inlet, and an articulating arm for use in positioning the one or more nozzles. The wash unit is physically spaced from a surface of the engine inlet cowling during a washing process. The articulating arm is operable via one of a hydraulic, pneumatic, electrical, or mechanically hand-driven operating means.