I used some suspension grease I got off of wiggle. Can’t remember the brand name but I think they called it ‘super-slick’ or some such name
I can’t remember the manual being specific about greases though I’m not 100% sure I have all of it
The base can be a pain if the nut on the base is done up tight to the base. You’ll need some long nose pliers that will fit into the holes well. A vice is useful to put the pliers into. I can’t remember at what stage they are but I used that sort of setup to get it undone anyhow
I’m right in the middle, came apart nice and easily. I’ll be using the slick honey since it’s still in warranty but it’s pretty pricy stuff. I did find the blue nut wouldn’t loosen by itself, tried an impact driver as directed but it drew out the red insert no matter what I did. No problem, just fitted needlenose pliars into it from the other side then released the nut- probably easier than if it had gone according to plan. It’s not as simple as a gravity dropper but still easy enough.