http://www.transecoenergy.com/pages/CNG_Conversions.htm
CNG Conversion Systems Available
• Ford E-Series Vans E-150/250/350
• Ford F-Series Trucks F-250/350
• Ford F-Series Trucks F-150
• Ford Transit Connect
1. BI-FUEL - Allows vehicle to operate on CNG or Gasoline.
By default the vehicle will run on CNG until it runs out of CNG, which then it will switch by itself to gasoline mode until more CNG is fueled into vehicle, which it then switches back to CNG mode. The user does have the option to change between gasoline and CNG with the simple push of a button, if desired
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