With 3 products only Smog Doctor replaces all competition products and cleans deeply and fast> gasoline, diesel, lpg and cng injection systems> FAP and DPF particulate filters> engine-, transmission-, gearbox-, differential-, power steering-, ABS oil systems> variable geometric VGT turbo chargers> air intakes and combustion chambers> intake valves of direct gasoline injection engines> EGR exhaust gas recycling valves / sytemsThe Smog Doctor products perform better and allow you to get a good market share only by demonstrating on problem cars. Smog Doctor presents the new VALVE LUBRICATOR for lpg engines. By injecting a small dose of the high pressure and high temperature lubricant in the gas tank before refilling, all of the lpg gas is transformed in a protector and also a cleaner. Wherever it passes, the lpg gas lubricates and cleans. 100% valve seat wetting and protection! Patent applicated.