From what I can gather you are trying to use Auto-Rx due to high oil consumption. Sporadic smoke at start up was likely due to seepage past the valve stem seal(s) when the car was parked overnight. This was likely due to only one stem seal. It would depend on whether or not the valve was in the open position when the motor came to rest. If it was closed then oil would not drip down onto the piston crown. If it was open then oil would make it down to the combustion chamber. Perhaps this issue has been solved so far. However you mention that oil consumption is much worse. There are really only two ways that oil can be burning. One being the passage by the valve stem seals. Second would be worn or stuck oil control rings on the pistons. Typically Auto-Rx would have dissolved coked up deposits between the rings which bind them up within the first 1000 to 1500 miles of driving, during the cleaning phase, which you are about to complete. How much oil was this motor burning before and how much now? For example a quart every 300, 500 or 1000 miles?
Did you top off the oil after the filter change? This would be about a half to 3/4ths of a quart loss by changing out the filter.
One thing that you should check out right away is the PCV valve on this motor. Its function is to relieve any positive crankcase pressure. Positive crankcase pressure will force oil past rings and seals. An underperforming PCV valve will also cause a bunch of fuel to get into the oil thinning it down. Thinned out oil from fuel dilution will cause heavy consumption. I dont know whether you are a do it yourselfer or not, but most quick oil change shops offer PCV valve service. Its a pretty cheap part. Turbo charged motors can really amplify the negative side of a poorly ventilated motor, ala PCV valve. The turbo wants to force a bunch of air/fuel into the combustion chamber. As a result there is more gasses that slip past the piston rings into the cavity of the motor. If the PCV valve is stuck and this pressure is trapped oil burning is huge.
I suggest you have it checked out when you change out the oil.
