Nicholas Seward

Good to hear the trip went smoothly and your son is now a confirmed DJ owner. On the cat efficiency code: at 181k on a '11 that sat a lot, worn O2 sensors is a reasonable bet before condemning the cat itself. As the other poster suggested, a Techron treatment and a couple of fill-ups is a cheap way to see if it clears. If MPG and drivability stay fine and Florida inspection doesn't flag it, monitoring is fair. I'd just log when it sets so you can spot a pattern with fuel brands.