I had a couple of older cars to detail this weekend. No swirls - cause the owner never washes them! EVER!! First one was a 2005 Impala, last cleaned in January 06, red - eventually. I knew the last time it was cleaned, some guy had buffed it, with what I don't know, so I didn't want to get too agressive, just a good polish, so I tried XMT#1, via a rotary with white LC pad. Dusty and didn't do much, I ended up hitting a few bad spots with the orange pad and some Meg's #1 medium cut compound, then I went with XMT#3 on a orange pad via PC - worked OK. Second car was a 2001 Buick, after washing, claying and washing again - I used XMT#3 via PC and orange pad, cleaned up the paint, left a great shine - wife thought it was done when she saw it. It didn't remove the few scratches in the clear coat left buy their cat, but they weren't too bad and I figured they needed clear coat more than a show car. After they saw the finished results they were well pleased. I'm pleased with XMT#3 as a polish, cleans well and leaves the finish ready for the LSP (I used WG sealer ) but it doesn't have much bite, and XMT#1 is weak as piss and smells as bad.