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I use Autoglym resin polish if a wipe with undiluted Fenwicks doesn’t work.Got some black streaks on front of van above cab doors have used fenwicks remover but can still see them , is there anything better at getting rid of them .
This product is unsafe to use on GRP, it's designed to penetrate stone, wood & brickwork. It eats gel coat.Jennychem Black Spot Remover.
Was recommended on here and as the supplier is near me in Kent I gave it a try.
Absolutely brilliant, removes black streaks and blackness along the seams with practically no effort at all
Put Jennychem in the search box above and find looooads of reviews.
This product is unsafe to use on GRP, it's designed to penetrate stone, wood & brickwork. It eats gel Sorry, my mistake. The Jennychem product that I am referring to is their caravan cleaner![]()