Aldermog was easy to fill, Tarka is not... Both have exactly the same filler cap.
Nozzle position is critical, holding it upside down helps. Also flow rate matters, at one petrol station with very slow pumps it is east to fill up, at another it isn't. I need to take take the "spare wheel cover plate" off and check the hose isn't kinked.
Another task for the "to-do" list!
Common problem with my plus 8.