I have been informed by a highly respected Morgan man that he always uses Gear Oil applied by a grease gun for the top nipple and grease for the bottom one.
The pins on my 2008 4/4 are ready for changing at 17000 miles and I wondered whether this was a more effective way of prolonging their life in the future, my informant suggests that it will.
Advice appreciated and do please have a look at my blog in which I do attempt to promote our lovely marque. "http://onemanandhismog.blogspot.com"