Originally Posted by Dogg

i face the exact same prob with my uni when it did similar odo with motul fully syn 300v 15w50.. the culprit was the oil.. don't know why,but by the end of just 1700 kms,there was abt 500ml left.. but then the piston rings were also worn out.. so i simply opened the head,put new valves and piston rings,decabonised the head and put the valves and got the valve mappin done,checked the piston and bore - every thing was fine , so left it intact,may require a cam chain and tentioner - in my case only tentioner,as the mech damaged it... did a run-in for 1000 kms and till 60k kms - i.e is till i sold it,it was as good as new,infact even better.. much punchier acceleration and sound note.. this might also be due to the oil which was petronas sprinta fully syn 10w40.. from 40k to 60 same brand oil,change every 2k kms... never needed a top up.. i also used the bike with k&n for abt 8k kms but with upjetting..so reverted to stock after head thing and was wonderfull...