So ive had my CPO Mazda6 Touring a yr this month. I have about 24,500 on it, bought it at 2,700 last April. AMAZING car so many safety features standard and so comfortable. ive changed the oil every 5K my self and rotated the tires. ive used motorcraft oil since ive owned it except the oil change before this on was was supertech 0w20. every oil change ive used motorcraft and its been syn blend. Ford now had updated there 0w20 to full syn. ive decided to use it this current oil change interval and im going to send it off in a uao and see how well it does. I dont pay for oil at work so i figured why not try it. also i put a set of continental DWS tires on it at 22K because the factory falken tires were worn to 3/32 with 5K rotations. AMAZING tires btw.