I've got a Marina Haynes Manual for all 1098 and 1275 models from 71 to 80.
It says in it that the marina uses 6 and a 1/2 pints of Castrol GTX Multigrade, but doesn't specify what particular grade, E.G 10W/40.
Apologies if this is a daft question, im still learning lol
Same with the Axle and Gearbox Oil, as recommended by BL, Hypoy B90 doesn't seem to be made anymore...


