now its been a few years since ive learnt to ride a motorcycles but a friend of mine has a Honda H100 smelly two stroke now ive never owned a 2 stroke bike but I asked her what oil she put in the gearbox and she replied motorcycle oil yes you guessed it 2 stroke oil (Women!!) so im dead sure this is wrong and told her so but im sure what oil to put in it now is it normal engine oil or the EP90 oil as ive always used EP90 in my gearboxes as I now run BMW Boxers hence the EP90 but when I ran old jap bike I used standard 10/40 engine oil so what would you put in a twostorke gearbox as i tend to lean towards the 10/40 oil