I figured they were lying. After leaving the dealer I went to autozone and bought tectron complete and put in the tank and filled up with 93 octane shell. I did that three times in a row and the cars been fine ever since. I changed my oil and filter and now I make sure I use the tectron stuff more then once an oci. Its a pain in the rearend to keep doing this and I might complain to Hyundai corp because it shouldn't fall on my wallet because of there design flaw. Someone was saying that I could close off the pcv valve and close off or redirect the vapors to the atmosphere but If I did that it wouldn't pass inspection or could screw up my warranty. But so far hyundais warranty doesn't mean anything anyways. The biggest piece of junk I ever bought.