Cosmoline

\Cos"mo*line\ (k?z"m?-l?n), n. [Prob. fr. cosmetic + L. oleum oil.] (Chem.) A substance obtained from the residues of the distillation of petroleum, essentially the same as vaseline, but of somewhat stiffer consistency, and consisting of a mixture of the higher paraffines; a kind of petroleum jelly.

I've never come across that so I'm not sure how to tackle it...

My general rule of thumb is start mild with cleaners and build up the firepower as needed and test on non-visible parts of the car (high end being Castrol Super Clean and Brake Cleaner, mild being windex!)

__________________
~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net