I just removed all the silly OEM stickers from the gas tank by just peeling and using goo gone.
Didn't have a problem, no marks or issues.
Not sure how goo gone will work on plastic though. Just don't leave it on too long.
I advise you to use it on a small area first before using it all. Also after using goo gone, get a wet paper towel/rag with water and wipe it down to get off the residue.