Rain-X Washer Fluid Additive

Used together (Rain-X + SONAX Clear View 1:100), my 2023 Model Y’s windshield went from dusty/filmy to crystal clear after one wipe—exactly what the pics show (before / mix / after). Beads water nicely, cuts road film, and played fine with the OEM wipers. Pros Instant clarity; no smearing Strong water beading for rain driving Cost-effective: small amounts treat a lot of fluid Tesla Y compatible (no chatter from my blades) Cons Add too much and you can get light residue—measure your mix My mix (works great): SONAX Clear View: 1:100 (≈25 ml per 2.5 L / ~0.85 fl oz per 2.6 qt) Rain-X Additive: ~4–4.5 fl oz per gallon of water (the 16.9 oz bottle treats ~4 gal) Tips Start conservatively on Rain-X; you can add more if needed. Top up with distilled water when possible. If switching from another fluid, run a few sprays to purge the old mix. Bottom line: this combo is an easy, inexpensive one-wipe to crystal-clear upgrade.

Great Product and Additive for your daily drivers.

I love this product. It solves the issue of having to reapply Rain X. You simply add it to your washer fluid and it constantly adds the solution without having to make a separate chore of it. The product also works as advertised, making water bead up, making it almost unnecessary to use wipers, unless it’s raining hard.

This is a more hands off approach to the issue and I feel it works well for its intended purpose. It is however not as good as the dedicated rainmax ones that you apply it and rub it off and such and hence the 4 stars. I did not experience streaking or other issues that people mentioned as I measured precisely as described but it is possible that if you put a little more then you would get some staining and such. I recommend doing a little less than the recommended amount and test it out for a couple of days prior to doing the full amount. I would buy it again as it is just easy to use in my opinion.

I put like three different forms of this stuff on my car, it just works. I know there's a lot of people that say it doesn't work and leaves streaks, but pleassssseee hear me out. Their products have so much potential and are underrated. I put this $&@# on my windshield and it leaves opaque streaks!?! -First grab some old newspaper and windex. Clean the windshield until it's undoubtedly clean. -Now grab your regular strength rain-x and apply generously. You will know if it was properly applied if you see an opaque film. If you do not see a definite enough opaque film, you need to reapply a second time (after elbow greasing the existing opaque streaks out) Do not use any more wet products to clean after your complete starting clean on your windshield. Remember to always do one extensive cleaning first before your project. -After applied properly you will see slightly opaque streaks throughout the entire windshield. The more consistent the film color is, the better it is applied. You con continue to even it out and keep applying as long as you use a dry rag to remove the existing film. Once you are satisfied with the amount of product used, grab a clean side of another rag and remove all film until it is completely transparent. -You will know if it is properly applied when you use your wipers with water on the windshield if for a split second after the wipers go over, you see hints of opaque reappearing behind the wipers. At this point add your windshield wiper concentrate to have your coat reapplied as you use. (Use your wipers for 5 seconds once a week or so) Now the coat stays there, and lasts much longer. If your at this point and you still see streaks, you didn't clean your windshield extensively enough the first time. You can always go back and elbow grease everything out before trying again. These streaks are not permanent, it's what a proper coating looks like, which might take some getting used too. The best case scenario for this product is highway while it's raining. You will need to use your wipers so much less because the water will bead up together and fly off. This product makes you rely less on your wipers. Still use them, but you'll notice that your not struggling to see even in the heaviest rain because there's 60-80% more visibility because the water sticks to each other instead of the windshield (so most of it beads up together and slides down). It's not magic, water still is on your windshield it just changes the properties of the surface. Really just added safety to your car. And I'm all for safety and visibility on the road. That's why I recommend it, it takes the edge out of driving in the rain and is just more added safety. If you're going with rain-x, go with both! I would not recommend just going with one or the other, they really work together so much better. Even car washes use this stuff haha! You just get a lot more concentrated stuff here on amazon. One of my favorite brands ever, highly recommend! Elbow grease those streaks out until it's clear and you're going to love the results. Sincerely, A Rain-X Addict.

Based my rating off of their other products. I feel that adding this to the washer reservoir could only help the overall performance of Rain-x. How could you rate on how well this would work?

I have purchased this for many years, recommended by many. It is the best way to add to your fluid reservoir to keep water and snow off the windshield. Twice a year, I use their windshield applicator to apply it, and then this is the additive to have a continuous, clear windshield.

Product works to some minor extent… I recommend doubling the amount stated in instructions if you want water to bead. Will leave a residue on your windshield any place your wipers do not touch. 3 star for ease of use and lack of result as stated in description. Would recommend getting the spray bottle and hand cleaning windshield then applying rain x original from the spray bottle instead of this