yeah I spent a lot of time trying to find the “25% stronger” version anywhere (local and online) to no avail. Even found a video from Zep from 2020 saying they changed the formula and their site only lists the regular one.straight up concentrate , let it sit for 20 min , change the orientation if necessary
empty the zep , first rinse with water from bath tap , thats what a did and rinse with distilled water after 3-4 time to remove water mineral
remove as much of distilled water and blow compressed air inside , move remaining water in 1 corner and use a straw to remove the rest
let it sit in the sun light to let it evaporate the rest.
enjoy!
I be doing it with my 3rd brake light soon , I will post how I do it soon
I tried with the regular 1 and was not powerful enough
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One of mine is done finally and good. Other has been stubborn the whole time but is getting there after hours of refilling, changing position, etc.
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