I got confused for a while. The car has modern grease nipples all over it except that one. I though it was for oil but now I realise its the old Enots type. The trouble it is like there's something behind it. There's no actual gap for oil to get through. I think it must be the worm drive. Dont know if the Penrite stuff is too thick. Wish I knew how to upload a photo.
I'll keep trying.
I'll keep trying.