The Redline Detection HD PowerSmoke is used by fleets to locate engine air leaks, the root cause of excessive aftertreatment maintenance and repair, as outlined in TMC’s new Recommended Practice 375. Using this technology in preventive maintenance allows fleets to speed repairs, reduce costs, improve performance and fuel efficiency, and increase vehicle uptime. HD PowerSmoke was specifically engineered to provide the pressure and volume needed to test the integrity of heavy duty intake and exhaust systems in one quick procedure, with the engine safely off.