downsides to the Ethanol's cleaning properties - where did all that crap wind up? Not that it all comes off at once of course
On an entirely related note (and this is going to make me look dumb) is an R33 GTS-T's fuel tank plastic or metal? Is there any materials inside the tank that can rust? It has been mentioned that if there is, filling it with ethanol would be a bad idea. All the shit in there gets cleaned out, then finds it's way through your pump and injectors, etc etc...