“ONYX propane conversion kits and propane engine systems have provided hundreds of landscapers, colleges, parks, and municipalities a reliable and clean solution for their commercial mowers that ...
FARGO, N.D. -- Bill Ongstad says converting his new 2013 Ford 350 to a propane bi-fuel system might save him 40 percent in fuel costs. "I figure to have it paid for by Christmas," says Ongstad, who ...
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