Hang around garages and shops long enough and you'll hear references to PB Blaster. This stuff is a penetrating lubricant that helps free rusted hardware by way of capillary action. A good product to keep in your shop.
Blaster -The chemical, not the character in "Beyond Thunderdome"- has a couple brothers that are also very useful.
TDL, The Dry Lube, is a silicone-free spray that lubricates tool mechanisms and reduces drag. Likewise, CSP -Corrosion Stop Protectant- will keep your tools and other items safe from corrosion and rust during long-term storage.
I don't sell this stuff but I use it because it outperforms most everything else on the market. Get you some