Hey guys I have a red 1990 audi with bad oxidation in some spots, the passenger rear fender is worst anyway whats best to remove this, Ive read a few people suggesting vanila moose, meguires and klasse aio, whats bestfor bad oxidation? Also any opinions on SONUS SFX-1 (http://www.bettercarcare.com/son-410.html)? The rear fender also has water spots. I will also try to get pics tommorow. BTW I need something that can be applied by hand.