As Viridian and Dan_Ed suggested, there's no generic answer to your question. It depends on the tonearm. Many unipivots are designed to be lubricated/damped around the bearing but some are not. If lubrication/damping is called for, the optimum fluid varies from arm-to-arm as well.
If you're asking about a particular arm, please identify it. There's a good chance someone on this board will have experience with it.
Of course you could always ask your dealer (if any) or the arm's manufacturer (assuming they're still around) or even read the owner's manual! Many manuals are available at www.vinylengine.com
