Hello all this is my first post. I was wondering if anyone new a formula for making your own windshield wiper fluid instead of buying those one gallon bottles of it? I would like to make it in a concentrated form so I have enough for several uses. I live in Florida so I am not concerned about it freezing. I have seen a few different formulas online but was hoping someone could give me something a little more scientific. I appreciate any help you can give me.