Grime Off™ Exterior Airplane Wash may be diluted in a bucket and applied with a brush or mitt, or applied via the detergent tanks on the 2-in-1 Hydro Washer. This product does not foam up like car wash detergents, so please don't expect that. It will coat the plane and, with some gentle washing, rid it of exhaust stains and grease. Used by commercial airlines by the drum, you should use if for the same reason they do. It will clean your plane but not harm your paint, seals, plexiglass, or fragile components in and around landing gear.