Try 151 PVC cleaner:thumb: (orange bottle) between £1 and £2 a bottle from the cheap shops . shifts all black streaks and green algae like magic
myself and my brother inlaw have been using the stuff on our vans for a few years and works as well as stuff 3 times the price.
also brings most plastics up like new
myself and my brother inlaw have been using the stuff on our vans for a few years and works as well as stuff 3 times the price.
also brings most plastics up like new