from the April 2008 RootesReview:
For those hard to remove fasteners and rusted nuts and bolts there is a product named “Aerokroil”. It claims to penetrate into crevices as small as 1/1,000,000”. I have used it and it does indeed work. They have a vast range of lubricants and penetrating fluids.
It is not normally available in retail stores; it is ordered directly from Kano Labs. They require a company name before they will ship, but you can make one up and it will fly.
Visit their website at: www.kanolabs.com