I have a 2006 MCX and I also use the MOBILE 1 High Capacity filter: It takes 6 quarts to get to the top of the dip stick. I have never put more than 1/2 quart at anytime , usually after about 25 hours.
Did your spark plugs look clean? Maybe replace your PVC valve? Look at your air filter and see if has oil in it.
I agree that would be too much oil in that short of time, I would suspect if the engine was burning it you would see smoke consistently.
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