hey guys. recently ive done some maintenance/ minor upgrades on the ol girl... replaced cracked Y-pipe, oil change to rotella t6, coolant flush (made sure to use distilled for final flush and motorcraft gold coolant), fuel filters, mishimoto 200 thermostat, and TSD daily street tune... and it seems that after i did the oil change from regular rotella to the T6, it started getting a miss at idle. and ONLY when it warms up past like 140 oil temp. i figured stiction would be more prominent when oil would be colder or thicker? maybe not im no expert lol. it threw a code here and there for either p0300 for random miss detected or p0306 for cyl 6 miss. almost sounds like it goes into a lope. no smoke. and once i give it any throttle it goes away almost instantly. no lack of power at all. so i tried some archoil fuel and oil additive. it did get a little bit better i suppose its only been in here a week. maybe it will take more time? not sure but i really hope i dont need a FICM, Injectors.. thanks for any help! greatly appreciated!