I have a mk1 dt125lc and having recently rebuilt the old engine,i am losing gearbox oil,fairly quickly.theres no obvious signs of it leaking externally so im presuming the oil is getting sucked into the crankcase (i would have thought it would run smoky but it doesnt seem to run too bad).i joined the cases with threebond 1104 on assembly.anyway-anyone with any suggestions as to a cure and how to go about it?
Pete