My 855T has a nasty habit of drinking the ethelyne glycol while I'm not looking.
I can find no visible signs of leaks, all the hoses seem good and I recently changed the reservoir cap. Its the green one now.
My first thought is a leak in the head or headgasket. But my mechanic says that isnt likely because there is no condensation on the oil cap.
The leak isnt too bad. I may have to add antifreeze once in 1000 or so miles and only a half quart or so at a time.

Still it is annoying and a bit disconcerting and it will only get worse over time.

Any ideas on what might be causing this will be greatly appreciated

Steve