Originally Posted by
cyccommute
Mineral spirits, naptha and goo-gone will work very well to remove the residue. WD40 will work but will leave residue of its own which could require further cleaning.
Acetone and alcohols are too polar to work on the adhesive used in pressure adhesives. They just get gummy and don't go anywhere. Even the mineral spirits takes a lot of elbow grease.
A safety note: Use the heat gun on the stickers but
do not use the heat gun after applying the solvent...at least until the solvent has evaporated. Heat, fuel, oxygen...and a little glowing heater elements are all you need to burn down your garage
Best to do all operations outside anyway...unless you have a walk-in fume hood.