Adding Flex Fuel Kit to 2004 GMC 5 cylinder
you can do anything if you put your mind to it,a big lumbering slow reving yank motor is difficult to kill anyway ,running it on hydrogen ,rape seed products or anything else shouldnt hurt it .we have biodiesel here in spain and biopetrol as well but we dont know it only the blenders in the refineries know what goes in so fit it and save some money on gas if its any cheaper,if it not then dont waste money buy a nice small diesel truck like a ford connect ,VW caddy
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