Originally Posted by progress4m

He may be actually telling the truth... and I am not trying to defend dealership at all… as I being doing oil changes on all my cars for the past 30 + years and definitely recommend doing it by yourself, but the darker oil could simply "side effect" of how “fast” oil changes are done at the dealer and especially at all "quick" oil change places…

As we know, you can’t drain all oil regardless of how long you keep drain plug open, but when the whole oil change process takes 10-15 minutes it is very possible that as soon as oil stops “dumping” from the drain the tech puts oil plug back in… therefore leaving a good amount of “old” oil in the engine… consequently you see darker oil… just my $.02