Originally Posted by bangedlegacywagon97
excess carbon in engine might add to the octane requirement for gas!
When I asked My local Suby Tech, 'is running higher octane ok'
He said, there is no added benefit, but, it may lead to carbon buildup.
So now I'm curious.
-I echo most the sentiments in this thread regarding sticking to 'major brand' stations that are reasonably busy. And sticking to your recommended octane rating as put forth in the operating manual.