Anybody try CNG conversion, just drove by a station that sells it for 1.36 a gallon I know you would lose power but can you flip a switch and go back to diesel??

 

yep.. but not on a Cummins... you basically enter it into the low pressure side of the air system and let the compressor wheel blend it with the incoming air. The engine continues to inject some diesel, just not near as much due to the fuel gas coming in. Engine does not start or shut down with fuel gas in the intake system. Gas just bled in while in operation. Use in drilling rig operation has cut diesel consumption by over 1/2...