Synthetic Oil?

[H3PAC]

New H3 owner here. This forum is great. I'm looking forward to getting to know my new friends.

A couple of my buddies have suggested switching to synthetic engine oil. I've heard all of the advertising hype, but I'm curious if it is truly worthwhile? What are the specific advantages, if any? Also, if synthetic oil is so superior, why doesn't the manufacturer specify it? I sure would appreciate some expert opinions, especially from the Hummer techs.

I certainly don't mind spending money on something worthwhile, but one of my buddies that suggested the synthetic oil is a guy who spends hundreds of dollars on vitamins, only to flush them down the toilet in his very colorful urine.