okay i recently dericed my car by taking the spoiler off the back. it wasn't the aluminum one. it was like fiber glass or something. but anyways, it was bolted + glued/caulked (whatever that stuff is) on. i got it off, but now the gluey/caulky stuff is left over.. any ideas how to get it off? i tried washing it off, and using rubbing alochol. doesn't work

 

Goo gone. Let it sit.

If all else fails, you can use a heat gun. Be VERY careful to not burn or paint. Use a heat gun to take most of it off then a clay bar to clean it up.