The 3M stuff looks like serious stuff. That's when you need to run a fan to blow the fumes away from you. Their notation of using it on "synthetic rubber" could indicate a no for the standard rubber mounts and bushings on these cars. The liquid tape is a possibility. Says flammable so will need to see if it entails petroleum distillates.

Everything seems to point to silicone. There are also silicone sprays but they would likely just treat or soak the rubber but not necessarily provide a substantial/long term coating