Super Duper Member
Join Date: Jul 2014
Location: glorious Galt CA
Over fifty years of driving and wrenching. I've never seen a gain in wandering from factory original spark plugs. "Path of least resistance"? Yeah, cows, water and electricity will always take that route.
Then again, other than some supercharged situations where the old platinum plugs and their micro-wire electrode would become incinerated, I've not seen much loss in changing to a different spark plug. Just keep away from gizmo plugs like those jackass E3 plugs and their baloney claims.
And yeah, don't use "premium" gasoline. Ask Google.