Hi,
since couple of months I was wondering where to put the chain lubrication oil tank and the valve. Last Sunday, I have decided to put it inside the airbox... Here is how I did it:

Drilled a hole at the bottom right corned of the right airbox cover, for the oil tube outlet:





And two holes at the top of the airbox for two tubes: airing and filling of the oil reservoir:



The tubes fit quite snug into the holes, but I am not sure whether this is enough to completely seal the airbox. I was thinking about sealing it with silicon. Is the vacuum in airbox really so big to suck up dirt and water through the space between? Or maybe this mod is complete no no.

XT660ZTenere with DNA Stage 2, Kev Mod and LeoVince.
By the way, Kev - your fuel mod rocks!

Thanks for advice.