Where best to gas up

IF YOU buy the Ford E-Gas option, it will be covered by Ford's factory warranty, so there's no question if you make a claim. If you choose to fit an aftermarket system, you enter a grey area. Ford will not cover anything that has been modified on the car to fit the gas system. That cover has to be provided by the installer. When it comes to a claim you have to rely on the installer to be honest. I'm not a huge fan of the Ford E-Gas system. It's now old technology and there are better ones in the aftermarket, some even from Ford dealers. The newer gas injection systems are much better than the system Ford still uses.