Actually one thing I can add to my short list is Stabil, which I use in stored gasoline and in my lawnmower.
So the list is Auto-RX, Regane in the clear bottle, Stabil, Bar's Leaks if needed in the coolant, and like I said I still believe in Lubegard products but I have not used any in quite a while so maybe Lubegard really needs to be removed from the list. Other than stuff like grease, graphited door lubricant, and stuff like that that is about it.
So the list is Auto-RX, Regane in the clear bottle, Stabil, Bar's Leaks if needed in the coolant, and like I said I still believe in Lubegard products but I have not used any in quite a while so maybe Lubegard really needs to be removed from the list. Other than stuff like grease, graphited door lubricant, and stuff like that that is about it.