There is quite a bit more power in windshield washer fluid (about 20% methanol) than straight water.. HOWEVER as far as I know methanol is illegal in all pulling associations
I have been using the cheep Walmart -20 degree windshield washer fluid. What I consistantly see is substantial power increase over just H2O.. The way it works is that the meth in the water vaporizes faster than just water and cools the charge air much better. And the alcohol also has some fuel. Alcohol also seems to help the diesel burn You have to be careful to not go any more than 50% alky with the water or you run the risk of melting pistons. (dont ask how I know this)
I sized my nozzles specifically for the -20 washer fluid.. I have 6 port nozzles and one in the face of the wheel.. 220psi 12v pump that come on full at 35psi manifold.
I used to pull years ago in a farm class where basically anything went.. We ran a 40 percent mix of straight methanol and water all year with no problems. For one hook we bumped it to 50 percent and lifted the head...on a 3K RPM 600 with a 2.75" charger. It was pretty spectacular for a brush pull.
