Now, let me say that I typically use RainClear by Glass Science on my vehicles but I did experiment with the RainX washer fluid additive on the wife's Explorer which has never had anything else applied. The instructions say to mix 4oz per gallon of washer fluid, and I added it to a new jug of Splash Ultimate all-season washer fluid. This resulted in a huge oily, streaky mess that took a lot of cleaning and a LOT of buffing with a full sized cotton terry bath towel to remedy. Has anybody used this fluid additive with success? I still have an entire bottle of it on the shelf and if its as simple as mixing it leaner then perhaps I would use it again. I just don't want to go through that headache again.