I use this stuff when my washer bottle is empty its 5L capacity so i just dose the washer bottle with 200mL of this stuff and fill the washer bottle to the top works a treat and 4L bottle lasts years
every 6 months when i wax/polish my car normally polish the glass aswell all windows and water beads off for afew weeks at least on the windscreen lasts longer on side windows because no wiper, also use good wiper blades not tridon nasties
https://cleaningproducts.net.nz/prod...iAx7n3F3j8SgkA
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