I removed it all from my M3 and wife's MINI Cooper.....if you are talking about cosmoline
Get one of the hand held steamers, steam directly on to cosmoline and brush it away (I used one of my swissvax brushes)
Steam is what you are looking for..... I did not use any other products.
Current: 2016 F10 535i xDrive AW w/ Black Dakota, ZMM, ZCW, ZDA, ZDB, ZPP, 688 & Black Grills + Euro Headlight Switch, Euro Tail Lights, Euro Side Mirrors, Euro Warning Triangle, Euro First Aid Kit, M5 Spoiler, M-Performance Style Front Lip
Retired: 2011 E92 M3 -AW
....ED April 29th, 2010
Retired: 2007 E92 335i -Space Gray.....ED Oct 19th, 2006