Also known as Redline ReadySmoke 95-0400, ReadySmoke diagnostic leak detector, Redline smoke machine 95-0400, and RDL 95-0400 vapor diagnostic tool. The Redline Detection 95-0400 ReadySmoke Leak Detector is a compact, professional-grade smoke machine designed for identifying leaks in vacuum, EVAP, intake, exhaust, and other sealed systems on automotive and light-duty engines.