Great forum!
Opinion poll time:
An outboard service yard told me on my 1972 50 hp Johna/Rude fishin' mota, that runs on E10 (all we can get in Massachusetts) that I should not run at the stock timing setting of 19 degrees @ 5500 RPM: I should time to a setting at least 2 degrees less to have the engine hold together longer.

Is this fact or fiction?

Would the change in timing even make a difference the way it performs?

Thanks,
Bill