No Longer Burning Oil

So I have owned my 12 GMC Sierra 5.3L for approx a year now. In that time I have only had the AFM shut off via diablotune for about 6-7 months or so. Before I would run through about 1/2 to 1 quart of oil every oil change. Oil changes every 5k. Noticed in the last 2 oil changes it hasnt burned a drop. I made sure it wasnt overfilled from the changes since the dealer does it for free and it wasnt. I just checked it yesterday, after approx 2500 miles since change. Still full..

Wonder if I got lucky?