I know some of you guys are good with cars and such. I have this 07 Mustang GT and every time the oil needs to be changed it starts running like sh*t. Mis-fires and general bucking, lack of power and stuff. Oil is not low or anything silly like that, change the oil and it starts running properly again. WTF gives?!?!?!?!? Give me an old 84 small block with carbs and I can rebuild it. This bizzar crap makes no sense to me.