Bought 135LS in Jan 2014. After the first service, I get 80 Kms per litre of Shell petrol.( Normal). I ride at 60-65 km average speed .Have not yet tried on PSU petrol. Instant pick-up, smooth engine !!
Only disadvantage:
The seat is very hard, and butt usually gets sore after riding for about 25 Km( in one stretch).