390 duke and oil

[Jug]

I would not worry too much about the oil use Johnathan being a twin they can use a little more oil then the 4 pots

It's actually a single.. but therein lies the problem.
Lots of crank case pumping coupled with persistent high revs and bugger all oil capacity to start with (just 1.6 litres).

[menzies3032]

ooooo many years ago used to have a single cylinder 125 and that thing used to drink oil as much as it drank petrol.
Might want to check the manual or ring the service department and ask for guidance just to be safe but think you going to find its normal. Just have to keep and eye on levels.