I have an 09 gt with 2.4. I bought with 80k. I have oil consumption issues with 5 w 20. I went synthetic now back to dino using valvoline high mileage oil 5w30. I have 500 since last oil change so far not noticing consumption. Time will tell. Everything else I am using Mobil1 synthetic.
My 2009 2.4 has slight oil consumption. I put half a quart in over 1500 miles. I use full synthetic 5w20 walmart oil with a fram filter. Mine is at 87k. Been a a good car, but worry a little about how long the motor will go.