We thought about 3 standard oil barrels loaded on a trolley and probably pumped full directly from the fuel filler caps. It would take far too long via the fuel drains by the u/c doors. For some reason the starboard outer was almost full and the other 3 almost bone dry.
How they managed to transport the barrels which would have weighed about 100kgs each is a matter of conjecture but judging by the way the modern miscreant can strip a church of 1000's of kgs of lead or a Comet store in south London of plasma TV's - these small logistical details are probably second nature to even a moderately well equiped larconist.