A lot of places have restricted the sales because of knuckleheads that run their mouth. Not you - but see it on other boards occasionally.
The seller can get in big troubles if its used for improper purposes. Small engine use is probably legit, but I'm not 100% sure. Racing is legit.
There's no road taxes on it, so that's not legit. Same with most racing fuels. There's a few exceptions. So just buy it for racing or small engine and don't risk a good thing by posting about where you get it.
