There is such an animale???? $$$$$$ I imagine so........
My thinking on it is totally seperate deisel, or LP/NG dual fuel.
along with jdevlin's link you can also go Here for more info.
The one time we were asked to price this option for a medical facility it doubled the price of the gen set, this was about 5 years ago. They didn't take it.
Roger
[This message has been edited by Roger (edited 08-18-2004).]