Have a look at the Miller-Stephenson website and check out their aerosol contact cleaners as they are very effective (www.miller-stephenson.com)
We have used their products very succesfully over many years to good effect. The best for cleaning pots has been their MS-200 but not sure it is still available
An alternative only if you can gain direct access to the surface requiring cleaning/lubricatation is to lightly spray on WD-40 and ensure you wipe off the residue as it will attract dust, etc and eventually cause more problems
Hope this helps, regards,
Richard