I've been lucky. No lubrication problems with my HP 4342A.
I've written several utilities for the 4342A. One lets you remote a large coil that interacts with the enclosure to obtain unbiased readings. The utility use the telegraphers equation to compensate for the inductance and Q change the leads cause. Other utilities compensates for the Q of an auxiliary capacitor used to extend inductor measurement range and do the calculations necessary to determine capacitor Q.
Brian
