"Kroil" is the oil that creeps - get a can and spray the nut and steering shaft. Then sit back and enjoy a cold Heineken. [

] After about ten minutes, whack the underside of the original steering wheel with a large ball-peen hammer. [

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Not too hard, but just moderate thumps all around the underside of the original wheel. [

] If nothing happens, repeat the above process. Kroil will loosen most anything, and the Heineken is a bonus. [^]