Two popular lubricants are WD-40 and silicone spray. These are available in hardware stores or departments. Sometimes they can be found in the automotive section. Spraying a lubricant from outside is a sloppy way to get things working, but it may work if some spray happens to seep where it's needed. I don't know what else the spray may land on inside the 01 and whether or not that could cause problems.
Contact cleaner is a little like alcohol in a spray can.
It is a chemical cleaner designed to dissolve corrosion off electrical contacts. Contact cleaner typically does not have any lubricant in it, so it leaves a clean, dry surface. In keyboard mechanisms, you want clean, but you don't want dry. The pivot point has surfaces that rub together and grease is needed for smooth operation and reduce mechanical wear. You can find contact cleaner at electronic supply stores like Radio Shack.