Propane Delivers Cleanest Medium-Duty Fleets

Larry Stewart | September 28, 2010
CleanFuel USA's propane-fueled GM 8.1L engine

CleanFuel creates a dedicated propane-fueled GM 8.1L engine by replacing only the gasoline tank, fuel pump and injector rails with an OEM-compatible propane fuel system.

CleanFuel USA's 8.1L GM conversion meets U.S. EPA and California Air Resources Board (CARB) 2010 standards as the cleanest engine available in its class. CleanFuel's propane system is considered an OEM replacement technology for both new and aftermarket gasoline-fueled engines.

The liquid-propane-injection (LPI) system is designed to convert medium-duty fleets, such as buses and 4500 to 8500 Series GM trucks, to propane. Propane is a cost-competitive alter-native that is plentiful in the United States, with most global propane produced and stored domestically.

The moderate cost of switching a vehicle's engine to propane (80 percent of an MSRP just over $11,000 is recaptured with a federal tax credit)is quickly offset by fuel cost savings. National price average for diesel is about $4.65 per gallon, and regular gasoline is about $4.10 per gallon. In comparison, propane motor fuel has been ranging between $2.39 and $2.59 per gallon. Qualifying fleets can take advantage of an additional $.50 federal tax credit per gallon of propane used. Find out more at