So I have put on a Meth Injection System that I assembled by purchasing parts from different places. The system includes a solenoid and controller for around $300 so now I am thinking about the "juice." There are all sorts of threads out there about using winter mix windshield cleaner and yes the "con" of this is that you have water that may not be the best relative to impurities. Considering that 1.) I am using the system for cooling and not tuning, 2.) I can by a 5 gallon bucket of racing methanol fuel for $35 here in NASCAR land, but, 3.) I don't really need another 5 gallon can of very flammable stuff in my garage for a couple of years, what do I do? Well, of all the threads I read not one ever discussed using a simple water filtration system to remove dissolved minerals and other contaminants from the windshield mix before putting the stuff into the MI tank. I have a 110 volt pump that is similar to what a RV has and if I buy an under $15.00 faucet filter I can create some pretty clean solution from a $2.00 or less bottle of winter mix, talking less than 10 micron stuff here. Yes you want the minus 20 stuff (that works out to about a 30% methanol value) that has no glycol in it. If I want a little more kick, a bottle or two of Heet with get me up to around 50% all for about $5.00 a gallon that does not include the cost of the filter. The blue dye, whatever it is, does not show up on the MSDS sheets so it is not toxic and the amount is trace so would think the dye is not a killer here. May even find that the filter removes the color as well.