There are many theories out on why these motors begin to burn oil. Many feel that the way the PCV valve feeds crankcase vapors through into the direct inject system, which can lead to a lot of contaminant build up on the valves themselves. I hear just as many folks claiming that piston rings either worn or fowled lead to their consumption. And it is likely that the 2 can be related. Anything that you can do to keep the ring packs clean and sealing properly prevents a lot of blow by gasses from entering the crankcase, which puts a lot less pressure on the PCV system.
You are quite smart in keeping the oil level full at all times, so as not to starve the turbo for oil. Also by keeping the oil up to capacity the oil stays a bit cooler and you have less volatility burn off.
I would suggest running a cleaning and rinse application which is the basic application, unless you know of any heavy sludging issues in this motor. It sound to me that you have been taking good care of this motor, which is imperative in these little high performance motors. You will only be running a 2500 mile or 4000 kilometer oil change interval for the cleaning phase of the application with Auto-Rx installed, and then another oil change interval of the same for the rinse. For maximum cleaning results I would suggest running a group III synthetic oil such as Pennzoil Platinum or Castrol Syntec for both the cleaning and rinse cycles. Auto-Rx works in mineral oil based oils much better than with a group IV full synthetic that is PAO (polyalkylolefin), based, such as Mobil 1.
Once you have completed the cleaning and rinse phases, go back to the oil of your choice and consider running the maintenance dose of Auto-Rx with each oil change to keep things clean.
