[jack404]

if your looking to make Biodeisal or Bio booze , your better off using a starch based mix rather than sugar , yeah you get it fast with sugar but you also need the fuel to lube a bit and do other things ( not make sticky soot like sugars do which gum's up valves exhausts etc)

grass roots make a good base, corn is good ( wastefull but makes good biobooze)
vege peelins with a little sugar and yeast is great save up them tater peelin's and ferment away

reeds and most swamp grasses have a good rep too

but sugar by itself , drink it , your body wont be as damaged as any engine you throw it in