I am new to the TW200 but not to riding the small displacement bikes. I am 59 yrs old and rode a lot of Honda C110 Sport 50s and S90s. I had a 1967 Triumph Tiger Cub in high school. One thing that I used, added to my fuel was Castor Bean oil. Yeah, the same stuff that kids got in the '50s when you had a belly ache. It made you or broke you! I commuted to college on my 1965 C110 Honda Sport 50. To get more performance out of it, I added about 1 to 1.5oz of Castor oil to a gallon of fuel. When riding a small displacement bike, you feel ANY difference and it definitely made a difference. I have now been adding it to the TW and it has made a good improvement. It is considered an upper cylinder lubricant. I buy it at drug stores in four oz. bottles. It makes the exhaust smell good too!