So I have the same symptoms as Mott in a 2002 Accord 5 Spd.....same mileage, I lose about a litre of oil every 3000 miles. The only difference is there is no sign of any leakage on the floor beneath the engine or on the engine itself. Is that consistent with a rear main oil seal leak?

 

Sounds different just because it's not leaking out on the ground. (Lets leave yours for it's own thread.)