The kind of "premium oil" matters more than the kind of engine; a lot of places will try to pass off a synthetic blend as "premium oil", but the problem is it's still partly natural oil and it contains all of the unwanted chemicals that go along with it. If you're going to use "premium oil", make sure it's a Group 4 full-synthetic oil, because that stuff is manufactured from natural gas (which is renewable!) and it contains no contaminants whatsoever.
If the engine runs hot and/or if the engine has a supercharger or turbocharger that shares the engine's oil supply, then the answer is definitely "yes, you must use good full-synthetic oil, no synthetic blends or any of that BS". Otherwise, it's more a matter of preference, but I'd still use a Group 4 synthetic (like AMSoil) in any engine, because in a low-stress engine you can run that stuff for 10,000 miles (they claim up to 25,000 miles in some engines) before you have to change it again.