Welcome to CNG Interstate

CNG Interstate is the leading authority for compressed natural gas and propane conversions in the state of Oklahoma. We feature Prins CNG and Propane Conversion Systems and are the Oklahoma distributor for Quantum CNG Tanks.

CNG Interstate provides clean fuel services and informational resources. We offer natural gas and propane conversions for most vehicles used by individuals, or organizations with small to large fleets.

Our compressed natural gas and propane systems do not change the current fuel injection system and do not tamper with the Federal Emission Standards. The bi-fuel setup allows a vehicle to run on gasoline or switch over to natural gas or propane with the press of a button on the dashboard.