[pdude1]

BMW's official windshield wiper fluid for E92 in California lists on the back to use 25% for type A-areas and 1% for non-Type-A-areas. Most counties are nonType-A as the areas with colder counties are Type A.

@1% the back of the bottle lists 2 oz per 160 oz of water.

Are you Californians doing this? That's very low percentage as almost makes me think why not just use plain distilled water as that's super low.

[mainbearing]

Not sure if this SDS below is for the concentrate, but that stuff is a joke. 65-75% just ethanol! The other must be blue coloring and possibly just water. LMAO!

https://www.m5board.com/attachments/145487/

I use RainX green (I heard the red can mess up the level sensor).

https://www.rainx.com/product/rain-x...-washer-fluid/

[POBEP]

P/N 83192361205

ECS tuning

simple, OE, cheap, no smell, will not clog washer pump filter, etc

[pdude1]

Originally Posted by mainbearing

Not sure if this SDS below is for the concentrate, but that stuff is a joke. 65-75% just ethanol! The other must be blue coloring and possibly just water. LMAO!

https://www.m5board.com/attachments/145487/

I use RainX green (I heard the red can mess up the level sensor).

https://www.rainx.com/product/rain-x...-washer-fluid/

I'm used the rainx in other vehicles and that stuff is awesome! Good to hear that one works for your e92.

[pdude1]

Originally Posted by POBEP

P/N 83192361205

ECS tuning

simple, OE, cheap, no smell, will not clog washer pump filter, etc

That's a simple solution though it looks like that's no longer sold from ecs, fcp, & pelican. Some other vendors claim to have it. That one looks to be a 35% dilution if it's the same recipe as the small concentrate bottle I was mentioning.

[Suvorovo]

I've read that some products can gunk up the reservoir/pump. I just use a generic super market brand since it probably doesn't have anything else that rain-x might.

[Efthreeoh]

I just use the cheap blue shit from NAPA/Autozone/Advanced. Never have had an issue. Why is this complicated?

[The Nightman]

Hah, wow! I had no idea even washer fluid was regulated by CARB:

https://ww2.arb.ca.gov/our-work/prog...ons/windshield

Anyway, since it's a CARB thing and not a BMW thing, I'd just use whatever's available while avoiding stuff like RainX, as the additives can potentially foul the washer fluid sensor or clog the jets.

I run washer fluid in the methanol injection on my other vehicles. You can check the SDS and verify that it only contains water and methanol. The -35C stuff is typically ~40% methanol.

[lookalikehuuh]

I have used these tablets from Amazon for probably a decade.

https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1

No issues with clogs or failed sensor on any of my cars. The problem is though that last time I ordere them they were $5.33 and now they are literally 3x that price. RIDICULOUS!! luckily I still have half a tube of them in the garage.