Quote Originally Posted by bob109 View Post
+1 on the use of regular! Why pi$$ money away on High Test when our motors are equipped with 3D Mapping, Oxygen and Crank Sensor and the likes. Honda did a remarkable job in designing the "Boxer Flat Six". Fuel requirements are clearly spelled out in the Owners Manual, as is oil change intervals which no one seems to follow. With 57K miles on my 13, its never seen a drop of High Test. I routinely use Sea Foam and the original OEM spark plugs are still in place with 40/42 MPG. Of course all of us has a "personal preference" which makes us feel "warm and fuzzy"! If High Octane gives you peace of mind, so be it!
+2, it's not like back in the 70's and 80's, the new ECU's on vehicles takes care of all that, if your not pinging don't change use what's recommended, even Consumers Report says the same thing.