Flex Fuel Oil Change Interval?

RLYNX_Si

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How often you guys (and gals) change your engine oil when running flex fuel? I currently run a blend of 91 oct and e85 on the daily and was wondering if I should consider changing my oil more often. I typically would get my oil changed every 5K miles at my local dealership; just went in for one yesterday tbh, but now I plan on changing it myself in the near, or not so near, future.
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Design

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IMHO, worth changing sooner and/or stepping up to a higher quality oil. Not because of the fuel itself, but the higher overall load. My gut says your maintenance minder will still be fairly accurate. But maybe consider changing out at 30% vs. the typical 5-15%.

You're probably aware that the maintenance minder comes due as early as 3-3.5K under some extreme circumstances, such as repeated short trips. If you really want to be scientific about it, run an oil analysis and go from there. Your dealer will probably be willing to grab a sample during your next service. GL.
 


 


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