http://www.ohio.com/blogs/drilling/ohio-utica-shale-1.291290/chesap...
DNG allows trucks to run on a mixture of diesel and up to 70% clean, affordable, abundant, American natural gas. When compressed natural gas (CNG) or liquefied natural gas (LNG) fuels are not available, trucks retain the ability to run on 100% diesel.....
.....Peake’s innovative conversion kit has been approved by the U.S. Environmental Protection Agency (EPA) for a variety of engines. The certificate of conformity makes it the only dual-fuel natural gas retrofit certified by the EPA, allowing DNG kits to modify a variety of engines from model years 2010-12 that encompass power ratings from 400 to 600 horsepower.
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Sesport - I think other systems are available that run as low as 5% diesel, or diesel on start, then switch to CNG/LNG.
For commercial trucks with a lot of their useful life, I'm willing to bet its a good payoff, but I haven't seen the economics. The best part of kits like this is that the vehicle can run on diesel if CNG/LNG becomes more expensive. While I don't see that happening, it removes some of the risks for company's that plan to operate the trucks for a long period.
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