Machined a nice o-ring sealed cap for the turbine oil tank. Drilled a 1/16" hole through the edge of the fill tube and cap that will allow a retaining clip to secure the cap in place. The cap has a 1/4" hole through it that will get a vent tube bonded into it which will then have a drain tube attached to direct any vented oil down below the angine and away from the belts.
Bent a piece of 1/4" tubing for the vent in the cap. Made up a retaining clip.
Parting off after turning the o-ring groove and knurling