Hello, i just bought a 2015 corolla le and i see the oil change intervals are 5k or 10k depending on what oil you use, however since my car is now at about 450 miles after a week of driving (i drive about 70 - 100 miles a day) i wanted to change the oil and filter myself and start using a mobil 1 synthetic oil since i dont get free oil changed anyways. I was thinking since the engine is breaking in there might be metal in the oil and i wanted to change it and maybe even install a magnetic plug. Do you all think its worth it? Also what about the tranny?