Re: Socket for oil filter on 2.4
snap on sells a special fit socket for the ecotec engines. its about 20-25 dollars, had mine since i started wrenching. the size you are looking for is a 1-1/4" socket. the snap on one works the best in my opinion, its short, and you just put an extension on the top of it, and your good to go. no clearance issues like other style filter wrenches have.
ASE Master Certified Technician
currently driving- 09 Chevy Impala LT, 83 Chevy Camaro Z28