YF (2011-2014) Sonata/i45
Just changed the ATF fluid at 99k miles. Used valvoline maxlife red fluid. $7/qt. Mechanic used up all 5qts. Drain plug had some material glob up, but not much. Fluid came out mostly reddish. I think it was fairly clean due to the drain dealership did at 60k due to a transmission sensor fail...