Methanol is the "active" ingredient in WWF. Usually about 20-30% methanol, a little blue or orange dye and the rest water. How toxic can it be? You can walk into Wally World or Home Despot and purchase 100 gallons of the stuff if you like. As noted, it is not for oral consumption but there is hardly anything else you could do with it, within reason, that would cause injury to person, fauna or flora. We spray millions of gallons all over our highways every year. Keep in mind that even tractor tire leaks usually drop only 5-10 gallons and at most about 50 gallons of 20-30% methanol that leaks out of a hole over hours. Rapidly biodegrated in soil. Harmful to fish only in very high concentrations. Indeed, humans are the most susceptible of mammals and how many folks are hospitalized after exposure to WWF?
The national fire protection association (NFPA) rating for health effects of methanol is level 1 which equates to "may be irritating" (same rating as Rush Limbaugh). As stated earlier, you would have to take a bath in pure methanol to absorb enough to harm you. Most of the MSDS info on methanol warnings relate to large industrial exposures especially inhalation in enclosed spaces. These are simply not realistic concerns for someone who is talking about getting a barrel of methanol, diluting it with water and pumping it into tractor tires. If it is safe enough for Granny to use as WWF, I'd say it is safe enough to use as ballast in a tractor tire.
