1st oil change at just north of 5200 miles. I put in 10 quarts of AMSOil 5W-50 and the job couldn't have been easier. Hardest part was jacking the car and setting the jack stands. Got an Evercraft Oil Filter Wrench from NAPA, PN 776-9007, for $5. It is 76mm and it fits the filter perfectly. While I have seen youtube videos claiming the proper size is 74.5, I had no issues with the 76. Made pulling the old filter and putting the 17 foot pounds of torque on the new one easy. Not even a hint of slippage. You really need a deep oil drain pan, this thing drains like an elephant taking a piss. Oil life was down to 3% according to the on board computer and I am really surprised the factory fill lasted more than a year, I bought this thing back in October '15. I have the Ford Performance oil separators on both sides of the motor. The passenger side has been pulling about 2 ounces every thousand miles while the driver side has remained bone dry. I will be interested to see if the AMSOil changes anything. I noticed a significant drop in my Bob's separator when I changed to AMSOil on my '13 GT500. Sure am looking forward to the track key and oversize throttle body for this thing.