I used a friends technique to clean tail pipes today and thought I'd share it with y'all. The secret it Easy Off oven cleaner. I used a couple black plastic bags to tape off the area. You definitely do not want to get this stuff on your paint. After I had the area taped off I applied a heavy coat of easy off. The crap on my tail pipes just dripped off immediately. Even though I washed them before putting it in the garage. Once the coat was added I did some of the other things I had intended to do in the garage today and came back 2 hours later. I have a box of old socks that I use for throw away cloths and cleaned the area up. Once done I went inside, made a cup of tea, and went back out to marvel at how easy it was and how I wish I had done it a long time ago. Anyway here are my pictures. Pic 1 is before, pic 2 is black bag tape up job, pic 3 is immediately after spraying tips, pic 4 is completed project. Remember pic one is what it looked like after I washed with car wash soap and water.