Hey CAYUGAD. Thought I'd give your 50/50 formula a try. Went out to thegarage and grabbed a gallon of PEAK "Windshield Wash And Bug Remover". Looking at the lable, I find the ingredients to be water and methyl alcohol - nothing else. Mixing this stuff with isopropyl alcohol would just seem to produce a stronger alcohol mix. I don't know if methyl vs. isopropyl is significant. Is seems I could just as well dilute my pint of isopropyl withabout a half cup of waterand get the same results.

Does the washer fluid you're using have additional ingredients?