I can confirm i had problems with cheap washer fluid it was too concentrated i think.
It can leave a pretty nasty water mark on paint and i had to polish it out once. Also it can damage the plastic of the headlights.
Now i use only premixed Motul fluid and have no issue at all. The cleaning ability is also very good!
Last edited by mboros; Aug 6th, 2022 at 18:29.
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