Quote Originally Posted by Moparformances View Post
I would not recommend carb-cleaner or break-cleaner on plastic parts.. (without lots of testing)

its my understanding that these products DO clean excellent, but like a dishwasher they strip the oils from plastic. making them tired and brittle

i have in the past used denatured alcohol on plastic put in a refillable pressure can and it will blast nearly as good as the others
Oh, absolutely. Rust removers are for parts that rust. If there is so much rust spilled over from a metal part that it has frozen a plastic part, I think you just need to replace the part-- like if you happen to have a plastic seesaw, or something.

Lithium grease is an option for trying to free up a stuck plastic part, though. You have to clean it after. I'd suggest dishwashing liquid designed for handwashing.

Another option is to drill out a rusted part, and replace it. Use a larger screw, cotter pins, there are lots of options.