Zedd:
Oil consumpstion on any piston pounder will vary, depending upon a number of things. power settings, time on the engine, how the driver operates the throttle/mixture, type of flying I.E. Type of strips operating from/to, type of loads (light/heavy etc,etc.
As for the specific H model, I've never flown nor operated that model. The only time I've ever experienced oil venting, was up in the great frozen north, and usually it was my fault (not impling this is the cause in your case)
Personally, were I flogging that thing around in the temps you are, I would be running the oil quantity a least 1 quart below indicated maximum, on the oil dip stick.
I do believe that machine is running a Cont. IO 520 or IO550?? If so, keep the oil quantity a quart below max. All cessna piston pounders I've flogged, always vented oil, when capacity was maintained at max.
Try that and let us know what happens. Then again, it is a relatively new machine. Who conducted the engine break in on it??
Good Luck, and always carry a couple of extra quarts of oil - cheap insurance to get ya back home.
Cheers