[curios]

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.