ProtoSmoke is the recommended fluid for M.T.H. products and can be used in other manufacturers products as well.
MTH - Traction Tires
MTH 11-90087 - #440 Signal Bridge & Control Panel (Silver & Red)
MTH 11-90088 - #440 Signal Bridge & Control Panel (Gray & Red)
MTH 11-99004 - Std. Gauge Track w/ Roadbed - Lighted Lockon
MTH 11-99024 - Std. Gauge #25 Illuminated Track Bumpers