ken said:
The guys at the bio station here in houston tell me that it can only be used as a additive. Ant that's why they only sell B99.9. There has to be some diesel to avoid taxes. But if there is no die in the fuel then how can they say it's not a additive or untaxed?
His understanding is not 100% accurate. They only sell B99.9 to collect on a tax incentive that only goes to "biodiesel blends", even when they have negligable amounts of diesel. The incentive is worded that the fuel blender gets 0.01$ per percent biodiesel made from virgin oilstock, and 0.005 (1/2 a penny) per percent biodiesel made from used oils.
The "it's only an additive" theory is
wrong. All fuel additives sold in the parts stores and truck stops and service stations have already had the tax paid on them. It is included in the price.
As far WVO usage goes, it is not approved by the EPA, so according to them, it is illegal. BUT if you are using it a motor-fuel on-road, the IRS wants their cut. Your state also wants to dip their fingers in that. As long as you are not in an emissioned state (or county of Utah), the EPA will have a hard time ferreting you out. Your state is probably going to be a lot more proactive at going after you for their fair share (it is fair because you are using the public road, after all) of of the road tax than the IRS is.
The best advice is to keep your yapper shut.