Originally Posted by enjoi1968
You clearly know something.... Care to share, as I've cleaned 3 sets..
Goof Off contains acetone and xylene, which melt many thermoplastic polymers. Obviously ABS/polycarbonate is a thermoplastic, so if you had success with it, then fine, but I wouldn't use it.
There are also several types of Goof Off that have varying contents of spirits/etc. I even think there's one with no spirits but with citrus oils, similar to Goo Gone which also does not have "harsh" mineral spirits.
A lot of people on here confuse Goof Off with Goo Gone, with disastrous results. There was an image in the $10 taillight mod thread of one taillight that was eaten through with Goof Off. Taillights are usually made with much lower impact protection requirement, and thus much more compliant and low temperature thermoplastics, which are more susceptible to chemical attack.