My 06 NF Sonata is coming up on the 30K mile service point. A couple of questions... 1) I'm not going to be able to hit the 30,000 mark exactly. There's less than a hundred miles left and it will be early January before I can afford to get the service done. It will probably be something like 31 or 32K miles by the time I get in there. Is there a risk in going over, does Hyundai write the car off or something? I am up to date on oil changes and other items. 2) The dealer service writer has been insisting that I need to have the coolant flushed, whereas the manual says I have another couple years. I am absolutely sure they're looking for every dime they can find and THAT service writer has spewed BS to other customers in my presence before so there is NO trust to speak of. On the other hand, the coolant has been in the car for more than 2.5 years now. That seems kinda long to me. Is this worth doing? 3) other comments? Stuff to watch out for at 30K? Thanks!