Rain-X pre-mix washer fluid is good for -20°C. Even diluted 50/50 with water (as it's twice the price of normal fluid), it still works at -5°C
Pros: good for -20°C
Cons: twice the price
Reviews of rainx washer fluid
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I just put the orange 2in1 RainX washer fluid in my truck and does this. Ugh.
Cons: causes streaking
I use the rain x stuff but I cut it with filtered water because I have had a history of the rain x stuff clogging my nozzles.
Cons: clogging nozzles
Stop using the Rain-X fluid. It leaves a film/build up on the inside of the reservoir and on the level sensor. You’ll need to pull the sensor and clean it, after that only use the good old blue stuff and you’ll never have the issue again. This happened to me on my 2018 Tiguan and my 2007 Jetta. Rain-X changed the formula for the orange stuff a few years back and that’s when people started having this problem.
Pros: prevents future issues
Cons: leaves film/build up
Vehicle:
Volkswagen Tiguan
No way, I've been using the same product with no gunk buildup. It could be a temperature thing. I live in texas so it's been 110 for like a month and a half.
Pros: no gunk buildup
Early in the ownership of my ‘21 Bolt EV I made the mistake of buying the fancy washer fluid withe RainX in it. For some reason, the stuff formed gelatinous globs the size of grains of kosher salt in my fluid reservoir. This stuff has periodically haunted me with clogged windshield washer nozzles. The first two times I took it to the dealer for warranty service, which is an all-day ordeal.
Cons: formed gelatinous globs, clogged nozzles, dealer service ordeal
Vehicle:
Chevrolet Bolt
Tried it once and the windshield always looked cloudy. Thought it was heat related at first, so tried it on a cool car in the garage, same thing. First rain storm I ran the reservoir dry and never used it again.
Cons: windshield always looked cloudy
Many people like rain-x. It messes up the sensor in my car (BMW). I find that the cheap generic blue stuff works fine for me.
Pros: works fine, inexpensive
Cons: messes up sensor
Vehicle:
BMW
I found using [Rain-X washerfluid] for awhile can leave that film and it took quite a while to get rid of it for me.
Cons: leaves hazy film, hard to remove
Rain-X washer fluid only. I buy 3 jugs per year for my two dailies and that's all I need. The road grime and such just does not stick. This in a northern environment where they love their salt.
Pros: road grime does not stick
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What we know about rainx washer fluid
The brand is registered in USA.
In March 2026, PartReview has a mixed opinion of rainx washer fluid. PR Score — 42 out of 100, based on 31 review and 97 votes. 11 positive reviews, 4 neutral reviews, 16 negative reviews. Average rating — 2.7 (out of 5). Votes: 41 up, 56 down.
Users also evaluated the qualities of rainx washer fluid:
- Cleaning power - removes road film and bug splatter quickly - rated ambivalently. 2.7 points out of 5.
- Streak free - leaves the windshield clear after wipes - rated negatively. 2.1 points out of 5.
- Cold performance - sprays and works in low temperatures without freezing on glass - rated positively. 4.3 points out of 5.
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