Well, I have heard that jigaloo can melt plastic, and we have classes every 1-2 days, the Traxxas is like the exact same thing as lubix, but cheaper and doesnt have the syringe, which I can get from my mom.
CRC can if you use it improperly, but just do a short burst into the cube, then work that in, it will leave a whie residue, but i don't think that harms your cube