My 2004 R1150RT has 30K miles with good care and modest riding. Synthetic oil was first used at 8K miles and continued to present. A very small oil leak was discovered at 28.5K, estimated at one drop every three days while parked and now about two or three drops per day. The oil is running down onto the bottom of the exhaust assembly chambers where it drips into my small cup. With panels removed, I see oil wetness above the exhaust assembly and some forward of this. Both cylinder heads are dry all around. No oil around filter cavity or on filter. No oil around oil drain plug. No oil around left cylinder or fill plug. Most, if not all, oil wetness is on right side of engine, even on fuel lines/connectors above intake injectors. Leaked oil color and viscosity appear to be engine oil. A leaking/seeping rear main seal comes to mind. Any other ideas much appreciated before I take the bike to a new dealer I've not traded with before. Many thanks. Dick Francis.