Fuel Enhancer is a device that installs on any petroleum-based engine; it has a 40 year service life and can be moved from vehicle to vehicle. The solution provides a fuel savings of 8 to 12 percent on average and reduces emissions by up to 80 percent, says the company. ROI depends on fuel consumed and fuel cost annually. The Fuel Enhancer can also be installed on building boiler and generators to save on CNG.