I used this polish on the headlights and stone guards on a Porsche after buffing them with Meguiar's M17 plastic cleaner:&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Meguiar-s-M17-Mirror-Glaze-Clear-Plastic-Cleaner-8-oz/dp/B0000AXMD6/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Meguiar's M17 Mirror Glaze Clear Plastic Cleaner - 8 oz.</a>. M10 with a PC7424 and orange LC pad really shined up the headlights and stone guards, but it just isn't strong enough to remove heavier marring, oxidation, or scratches. The very small scratches and marring on the stone guards were removed very well and the guards in particular were brought back to their original shine. Before polishing with M10 the guards had a dull luster to them that contrasted quite poorly with the highly polished paint around them. After polishing with M10 the guards blend far better with the paint around them.