I currently have the same problem. I changed my oil the book called for 6 and a 1/2 quarts. But when I cked it at 6 it was at max so left it be. One week later it through P0203 #2 Cylinder Misfire. I changed the plugs and the code was never thrown again. But at this time it is misfiring on idle enough to raise my eyebrow. It happens when it warms up and I sit at a stoplight to long. Are you suggesting I add oil?
