Motorvac offers their DieselTune IDT 4000 fuel system service unit for use on diesel engines, including heavy-duty trucks. With automatic, microprocessor-based operation, the DieselTune uses a specially formulated detergent that combines with the vehicle's diesel fuel in passing through the fuel system, while the engine is running. This process helps remove deposits on the injector, injection pumps and combustion chambers, as well as lower emissions levels in helping to restore fuel efficiency and engine power. OEM-specific adapters are also provided for connecting to vehicle engines