Help, Black oil and smell of gas.

matt s

New Member
Background 2015 Buick Regal 2.0 Turbo, CAI and Trifecta Tune, 53k miles. Oil is black and smells like gas. Changed oil early last two changes and still like this. I just changed the oil, ran around the block, checked oil and it's already dark and smells? Any thoughts? It's getting about 28MPG, runs great, never any warning lights?