JE
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- March 10, 2015
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- City, State
- Londonderry, NH
- Year, Model & Trim Level
- 2015 Explorer Sport
Also note that the engine will adjust to LOWER octane nearly immediately when knocking is sensed but it will be slower to adjust for a HIGHER octane. There have been other conversations on what will cause the engine to readjust to higher octanes but it sounds like resetting the ECM (by unhooking the battery for a while) or making some runs at WOT will speed the process.
Note that all the reports that say there is no advantage to using higher octane fuels have a phrase like "unless your vehicle is designed for it." The Ecoboost in our Ex Sports IS designed for it, but can also self-adjust for lower octane fuels.
And it's not alone in that. My 2005 Chevrolet is capable of the same adjustment but with a few different behaviors (that probably aren't of much interest on a Ford forum.)
Note that all the reports that say there is no advantage to using higher octane fuels have a phrase like "unless your vehicle is designed for it." The Ecoboost in our Ex Sports IS designed for it, but can also self-adjust for lower octane fuels.
And it's not alone in that. My 2005 Chevrolet is capable of the same adjustment but with a few different behaviors (that probably aren't of much interest on a Ford forum.)