Download our Technical Paper on "The Achilles Heel of Natural Gas Vehicles: The Symptoms, Diagnosis and Prevention of Oil Carryover"


NGVi is the only ASE-accredited training provider in the entire alternative fuels industry. This means you can choose NGVi with confidence, knowing that our organization has been reviewed against automotive training industry established and endorsed standards, and approved by peers.

NGVi is the industry's trusted resource for unbiased technical information.

Return to NGVi.com
All Rights Reserved. © 2019 NGVi

Return to NGVi.comwww.ngvi.com
All Rights Reserved. © 2019 NGVi

Check out our other resources:

Leo Thomason is the Executive Director of Natural Gas Vehicle Institute, where he applies his more than 25 years of natural gas vehicle experience to developing and serving as the lead instructor for a variety of natural gas related training courses for fleets around the world. Leo developed and is the lead instructor for NGVi’s natural gas vehicle fuel system and fuel storage cylinder inspection training course. In this Technical Paper, Leo answers the most commonly asked questions about compressed natural gas (CNG) fuel system inspections.