I put exactly 200 hours on my 2014 250 SHO before both heads cracked. Yamaha replaced with a new powerhead under warranty. I ran the new powerhead an additional 191 hours (2 seasons) and I am back to oil leaking out of the bottom of the powerhead again (Thank god I extended my warranty!). Its in the shop now being looked over and should know what happened next week. BTW I am strict on maintenance and do everything that is outlined by Yamaha. I only use Yamaha parts and oil/grease. I monitor my engine on my Lowrance via a Yamaha interface. I always warm up engine to at least 120 degrees before slowly taking off and have never had an alarm of any kind. I do not abuse the engine and if anything I baby it too much. My lakes are small so I can get across a lake in 15 minutes. This engine does not make oil either, never had that problem. FWIW there are a lot of cracked heads on Yamaha SHO's as of late. ..