I have used a good polish to remove the etching of the clear and then used this product to seal any scratched areas. Will also take out swirl marks.
http://www.dvelup.com/Cart/index.php...products_id=59
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Enjoying an E89 Z4, F30 320i and Fiat Abarth //
E85 Z4 (sold), E82 128i (sold), Fiat Pop 500 (sold)