CW Burfle
Of course you are correct - the link was to Just Trains - but I was particularly impressed by the old Lionel recommendation to use sae10 motor oil - Winter oil in the old days of single grades for this was, to me, surprisingly thin.
But the repeated re-oiling necessary back in the day can, I believe, be largely avoided now by using modern oil. Back in the day, Lionel or anyone else did not envisage train collecting with the infrequent use of some trains this inevitbly involves - leading to different desirable properties now. How to achieve them is the task.
I think it is highly relevant that those that have been using Mobil 1 for many years now have nothing bad to report about it.