My 13 sonata I swear it’s getting louder. It passed the orange dipstick test 6 months ago and I just took it up to the dealer again. Now the service manager and the master tech said it’s loud and knocking and it’s just a matter of time. But it passed again. Said come back when it’s seized lol. So does the engine get louder and then just break or does it just seize without warning?????