I have a 2013 Sonata with a 2.4L it cranks good, has new Denso Spark Plugs about 10,000 miles, coils appear to be in real good shape. Running great now every so often about 1 time every 2 months you will notice a rough idle for about 5-10 seconds and then it is over for the next several weeks. I have 110,000 on this vehicle. Original plug coils and fuel filter. New air filter real random occurence. It is not idling rough now or has been before the event. Is there a OBD port for this vehicle? Plus this motor uses 1/2 quart every 600 miles I use 5W30 and use 10W30 when it needs oil added so it might slow down the rate of use (it does not help). Suggestions?