I'll be changing mine this weekend to synthetic. If it does break, I dare Honda to deny the warranty because we will be in court real fast. As long as you are using the recommended API certification, they can't deny warranty based on the brand of oil.
I have used synthetics in everything I own from boats, 700hp rotaries, 1000hp 4cylinders, transmissions, diesels, and differentials with zero failures caused by lubrication. When I build them, they are filled with synthetic from the very beginning. Every high end car today comes factory filled with synthetic. This old fairy tale about synthetics and break in periods needs to die. Rant over lol