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you can be loosing oil through rings, valve seals or more obviously externally, gaskets. check your oil before you ride. unscrew the dip stick wipe it off and just stick it back in, dont screw it in. if you want to check it during a ride, a few minutes of the motor resting should give a close accurate reading
"You say that I sin, You say I'm bound for hell, but once your judgement condemns you, I shall see you there."
----Georgia Southern University
-Logistics & Intermodal Trans.
Sinkhole Customs(choppers and 4X4)-mechanic/fabricator
sinkholecustoms.com
-Bronze level Honda technician