I know a little about CNG but I have a lot of experience with LPG as I ran it in my 76 F-200 (long story on the 200 part) all through high school. I couldn't argue with $0.26 to $0.40 per gallon.
The benefits are many with that stuff though. I wouldn't run CNG as a supplement in a diesel engine though...too much risk with high combustion pressures. Besides, it's far too much of a "fad" or designer drug at the moment.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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