The whole thing is kind of overblown IMHO. I started wrenching in the late 70's and this was an "Oh My GOD!" kind of thing and we all started getting wired about "Stellite" seats and adding TEL with much wringing of hands and gnashing of teeth. "Regular" (non-gearhead) folks just started using unleaded premium and not worrying about it...and when I started tearing down those engines in the 90's I rarely found seat erosion, etc. unless the engine was really used hard.
I agree with cdowns - don't go looking for trouble
