I used to use rainx washer fluid. It gets reapplied every time you use your washerfluid so as far as application, there really isn't any. Water beaded up and on the highway even in heavy rain i wouldnt have to use my wipers as the rain slicked off like stars in a star wars movie. But it's not cheap.
Yeah I’ve had no issues with sensors or freezing while using the orange rainx in my past two vehicles. I just like the beading effect the rainx has on the glass. Makes a huge difference in the rain.
Just dont use the rainx fluid (orange). The blue stuff that has the cold rating (sold at gas stations) is good enough for me.
It's magical - it cleans everything off the glass of my 2017 A4, and it seems to have some sort of wax or protecting agent to boot.
The washer fluid factory fill is awesome. Nothing dissolves bug guts on glass like that stuff. My reservoir was filled with only the factory fluid all of last winter, and it never froze up or clogged. The strong alcohol smell of the factory fluid got me a breathalyzer test at a RIDE check once.
Quick fix for poor souls who suffered from evil Rain-X. Go to nearest pharmacy, buy two 22 oz bottles of 91% isopropyl rubbing alcohol. Empty your washer fluid reservoir by constantly running the pump for 2 min. Pour both bottles of rubbing alcohol into reservoir.
In the days of my Mk IIIs I used Rain-X washer fluid. It made the lower seal below the windshield turn into soft crumbly gum. At least I've always assumed it was the Rain-X stuff. I haven't used it since. It worked pretty well as Rain-X with no rubbing, though. I was impressed until it came apart. Fortunately the seal had some mysterious purpose, as it was outside and below the windshield and the loss of it didn't cause water leaks.
Defiantly blue stuff. I used to use the green Rain X in a Honda Civic and it gummed up the line and motor to the point I had to have it replaced twice.
I recently used the new rain-x formula and I still got my sensor washer light come on now and won't go away swapped back over to the cheap blue washer formula.
Side-note BMW's smells like peaches :laugh: Doesn't work for crap in cold weather, we had do change a lot of pumps out even when doubling the concentration. Would freeze up when it hit the teens and split those suckers right in two.
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