MIIIO and D weights sheet
286 gallon (UK Imperial) = 1300 L
242 gal = 1100 L
374 = 1700
110 = 500
weights for finned/unfinned 500 L,RPK, the 1100 L fuselage tank and its specific pylon (I remember manual sheets of Swiss MIIIS with the tank used on the wings ..?)