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Mixing washer fluids ok?

6.8K views 55 replies 31 participants last post by  HooliganActual  
#1 ·
I have the stock washer fluid in there but I got some new all season stuff. Is it okay to mix it or should I drain what's in there now by running the washer until it's out then fill with new stuff?

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#2 ·
mix away. most wiper fluid is just alcohol of various strengths.
 
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#4 ·
It all depends if the Flux Capacitor is energized. If it isn't, then you are good to go regardless of fluid color. :thumb:
 
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#7 ·
If you live in a cold weather climate zone be sure to get the stuff rated for low temps.
 
#8 ·
I remember reading about mixing and things gumming up.
There is some sort of reaction that can cause gelling.

I would either stick with regular or run it down and use the rain x

I use rain x in my truck, but I am tentative about using it on my Jeeps because of the soft top. I don’t want funky blotches on my soft top.
 
#12 ·
I go through so much washer fluid I finally just bought the tablets from 303 and mix it up at home.
 
#13 ·
I used to work for a company that made any after market automotive fluid you can think of. Basic windshield wiper fluid (not RainX or similar specialty products) was 1 gallon of water, a couple drops of blue dye, and less than an ounce of isopropyl alcohol.

Not sure what the 303 tablets are but for anyone else out there looking for cheap washer fluid, buy a bottle of Heet and mix a capful with water in your WW fluid reservoir and you’ll be golden.
 
#22 ·
I just in the last few years changed off of straight well water. I did have the washers start to freeze up on a trip to Detroit in Jan years ago in my Ram 2500. Stopped and topped off with washer fluid at an auto parts store and had no more issue.

I use the cheap stuff and never have had an issue.

I did have an issue with whatever the dealer put in my 2003 when I bought it in 2014 because it did gunk up and stopped up the nozzle. About 10PSI from my air compressor cleared it out, looked like blue snot. I ran pure well water for a while till the blue chunks stopped coming out. Then went with the cheap WalMart stuff and no issues since.
 
#26 ·
We also bottled Heet at the plant and all the maintenance guys did this. Basically Heet is just a bottle of methanol, the same thing we used in the washer fluid. The maintenance guys would do this because the bottle of Heet cost about the same as a gallon of WW fluid but you could make a dozen gallons out of one bottle of Heet if you didn’t mind that it wasn’t blue.
 
#25 ·
I run Rain X all weather -45c. I mixed it with the all season mopar crap that was in it when I bought it, made sure it was full before I took it in for the last service before warranty expired.
 
#30 ·
#43 ·
#35 ·
Heet in the yellow bottle contains methanol, ISO Heet in the red bottle contains isopropanol.
 
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#36 ·
from what I have read in the past the yellow only contains 1% methanol and 99%isopropanol. I information on ingredients is hard to find as they always say proprietary lol. They don't want you to know it is just rubbing alcohol.
 
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#40 ·
I just looked up rainX cleaner and Super Tech De-icer and sure enough just methanol and water. Super tech was 30% by volume and Rain X 30-50%.
 
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#45 ·
I used to see gelled up washer juice on occasion when working at various Dealerships. This was many years ago but it does happen. I use the rain ex exclusively and haven't had any issues with it. Probably been mixed into ^ different rigs w/o issue.