My father was on 202 Sqn. flying met Halifaxs in 1947-1950. The job were the Bismuth trips where they flew a pattern around the North and East Atlantic taking weather observations. Aircraft returning on three engines after a eight or nine hour Bismuth trip was normal.
In 1963 when the Victors from Honington reinforced Singapore during the Indonesian Confrontation a York (Dan Air?) arrived to take Victor spares out. In the cabin they had a 44 gall. drum of engine oil which was to keep them going until they reached Singapore.