Combust Fuel Pills 50 CT Combust Fuel Pills™: Advanced Biphenyl Free Fuel Pills have been tested extensively by independent labs, shown to reduce carbon particulate emissions and improve fuel combustion. The savings are apparent on paper but more importantly Combust Fuel Pills™ will provide real, measurable savings. Remove Deposits: Combust Fuel Pills™ remove deposits which cause incomplete burn in the combustion chamber. Decrease Fuel Consumption: As the carbon deposits are removed from the internal engine components, fuel economy improves. Reduce Emissions: The primary source for harmful emissions is the carbon deposits. As the Fuel Tabs reduce and remove deposits, there is a drastic reduction in the emissions of CO, NOx, SOx, HC and particulates. Combust Fuel Pills™ help the environment.