Join Date: Oct 2006
Location: Langley, BC, Canada
Well, it was probably low to begin with when you parked it and there isn't much in the system even when it is full.
I suppose it is possible it could leak without your noticing. Perhaps the chain might even fling it away...
Sometimes the piston gets cocked a little sideways, especially if the cylinder has been honed, and drip, drip, drip goes your fluid. Mine likes to run down the kickstand.
DL1000K6 Two wheels good; four wheels bad.