50:1 = 100ml of oil to 5 litres of petrol, standard machines and cast iron 70cc 40:1 = 125ml of oil to 5 litres of petrol, mid race 70 33:1 = 150ml of oil to 5 litres of petrol, for high end set up
haha lol but some people ask for advice then don't listen, they think they know better than everyone else and can re wright the rules of scooter tuning by the way did you do that little job today