The Stovebolt Site Forums The Shop Area General Truck Talk AD Steering Box Lube?

Where does one normally purchase cornhead grease? I've check my FLAPS, and they have no idea what it is. I get a blank stare at Tractor Supply, too. I can order a $2.99 10 oz. tube of it online, but I'd have to pay 10 bucks shipping. No way.