KrautBurner, see this attached doc, it sould clear up the misconseption on why even with high octane some people still get a knock (referred to as Enigine Knock or Spark Knock) in the engine. And this does not happen in TX only. Ask the Oil guys why profits are always up and you won't hear its because they are misleading the consumer with this stuff I'm sure.
Records show gas stations pump out low-octane gas from premium pumps | khou.com Houston
Nothing I ever post is intentionally incorrect.