Sorry Extra gloss protectionTina
I use Autoglym super resin polish, and if you can be bothered when you have finished treat it with supergloss protection. The supergloss protection will delay the appearance of streaking for a considerable time if done correctly. Their web site gives you all the info you need. Mind its not cheap
Thanks BR !! quite a handy little shop that !!Tina, they sell black streak remover in the caravan and camping shop at the top of Eastbank street