I believe Alex used Labelle teflon grease. Its plastic safe. Frankly I doubt either grease will hurt anything.
I have to smile. On the motorcycle forums I am on there are the never ending oil threads. Here its the grease thread. Manufacturers have been using steel, brass, bronze, nylon, delrin gears for decades. Worse case the grease dries up and you have to clean it out and replace it.
Pete