I've run all three octanes I can get here and settled on the 89, just runs better. I can't get the 94 but sure would pump a couple of tanks through if I could. About every 4th fill I burn premium. Just because! The old school says that High perfomance engines like high octane (they do), and the H2 has a performance engine. Each engine is different, so do the three tank test and decide for yourself which is better for you and your Rig. If it runs better and gets better MPG stick with that brand and octane. Just another humble opinion [img]/infopop/emoticons/icon_cool.gif[/img]
|