[ACHiPo]

Something melted/baked onto the ceramic-coated passenger side-pipe. I've Googled this topic and searched here. I've tried most of what I've found with no success, so I'm looking for alternatives.

Here's what I've tried so far:
Windex
Soap/water
Goof-Off
Rubbing alcohol
Laquer Thinner
Scotchbrite
0000 Steel wool

While the steel wool polished the ceramic a bit, it didn't touch the baked-on crud. A few more things I have in my arsenal, but have been hesitant to try:
Lacquer thinner or Goof-Off with steel wool
Flitz metal polish
Rubbing compound/ Random Orbit polisher
Wire wheel
Oven cleaner


From the SPF SPOC site and manual, the ceramic coating is pretty tough, and can withstand some abrasion, e.g. steel wool, but I'd rather not damage it.

I know one person on here recommended blue Wenol, which I've never used, but sounds a lot like Flitz. Another thing I decided not to try is to get the pipes nice and hot and put ice on the crud--just doesn't seem like a good idea.

Suggestions?