Time to start a thread about what kind of oil to run in it.
I am sure if time was no factor EVENTUALLY you would see a difference in engine wear. Fact of the matter is that there are a lot of machines out there that have been running strong for 20+ years on 5w-30. Kills me when people are so anal about running a "premium" oil in the unit but run out and buy ethanol fuel.
If you live in a REALLY cold area then I understand the whole easier flowing synthetic argument.