Quote:
Originally Posted by cRiPpLe_rOoStEr
Propane switches from liquid to vapour way faster than gasoline, but it's not the same as CNG which is mostly methane. Going leaner on propane is also not that easy as with CNG, due to different anti-knock indexes. I don't remember exact figures but, while propane has a lower AKI than regular gasoline, CNG fares better than ethanol regarding that.
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I remember them installing a vaporizer with different spark plugs and bunch of work but mostly saving huge on fuel because I was a courier driver back then. I wouldn't mind if you explained the difference between CNG and the others so it can clear the mud in my mind.
Thanks