Originally Posted by
The B Word
The F3 had bigger oil tanks than the GR - I’ve done more than 10 hrs in a Tonka without running out of oil in accordance with the RTS.
As far as I'm aware, the Mk104 engine in the F3 had the same oil tank as the Mk103 engine in the later GR1 and current GR4. However at the time of the Falklands conflict, the only Tornado engine in town was the Mk101 which as previously stated had higher oil consumption.
The Mk103 engine was initially fitted to the Germany based squadrons. I don't know when the Mk101 was finally retired but we were certainly still using them at Honington in 1989. I would imagine that TTTE were the last unit to use them.