Vaguely remember two RAF Coningsby, 229 OCU F2 aircraft, doing an oil usage trial by flying non-stop to Cyprus, cleaning the cockpit out on return took a little while longer than usual, and there was something on the outbound trip about the rumoured use of HF and a possible UFCM, but age and memory maybe has affected my recollections. I believe oil consumption was not considered an issue after this. Maybe someone remembers some more detail and can confirm, or refute, those recollections.
Also from my perspective from working on virtually all marks of Tornado, I will miss the sight and sounds of them flying around, hope I see some of the flypasts around my way.