Many moons ago Ficken sold Trico repair kits until they ran low. I suspect they make their own parts now. Here is a copy of the repair instructions. You apply wheel bearing grease to the paddle. Injecting brake fluid, anti-freeze, 3-in-1 oil, Marvel Mystery oil, snake oil, coconut oil, pine oil, motor oil, moonshine or LOX simply makes the old bearing grease softer for a time. Oils eventually dry out and so does grease (not silicon, but...you don't want that sucked back into your engine). The seal material (leather in some cases) of the paddle can harden or crack. The smart thing to do is send your wiper motor to Ficken and let them do an overhaul.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
