Boston Engine Degreaser is a powerful solvent-based heavy duty trade quality degreaser. Degreases engine & transmission parts on all vehicles. Remove stubborn oil and dirt on engines, gearboxes, diffs, transfer cases and engine bays to spot leaks or just avoid unnecessary mess when performing basic services and extensive repairs. Boston engine degreaser actively lifts filth, dirt, grease and oil so using it is as simple as spraying on and hosing off or wiping down with a rag. Boston Engine Degreaser removes oil and grime from virtually all surfaces including concrete paths and other masonry surfaces. Simply spray some Boston Engine Degreaser on and hose it off.