Profile: Howes & Co., Inc, R. B. supplies additives for heavy duty diesel vehicles. Our fuel system cleaner dissolves combustion chamber deposits, which include piston top, intake/exhaust valves & the end gas region and also removes carbon deposits on injector tips without removing the injectors or using expensive machines. Our howes meaner power kleaner is a non-solvent, alcohol free product formulated to increase the life of the fuel injection system, resulting in more power and lower emissions.