Gary, I read your post before I came to the conclusion that the strut mount/bump stop need to be lubed. I searched the forum to find related posts and to find similarities between my problem and the problems of others and their solutions, including yours. Without these posts I would never have tried to lube the strut mount/bump stop.
Gary, After a number of mechanics and my own attempts to duplicate the clunking sound I went to the dealer who simply said that the mounts where dry and uppon lubrication solved the problem.
If I want to do this my self:
What grease do I use.
What are bump stops.
How much grease.
Do I need to unassemble anything.