hey berley guts I run an older 2stroke 60hp yammie on a seafarer vsea 4.8...average trip to broughton with some running round and I fish the northern side most times I use 30/35 ltrs average...depending on how much you run round up there I would say you should have plenty..if in doubt take a ten ltr container with you as I think you would prob only use 25ltrs for my normal trip..etec 60 should use heaps less than mine...rick