I rented small equipment, and sold Stihl and Husqvarna; they both Warned against using E10. I'll be surprised if you can find a manufacturer that is good with it; look at it this way, if it stayed mixed that would be fine. As it is, you can get served a higher dose of Ethanol, and it won't run worth crap.

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1998 VW Cabrio
2001 Audi SomeRoad A/T (no air suspension)
2003 Audi DeadRoad M/T (no vroom, for later)
2002 Audi NoRoad A/T (nothing under the hood, being rebuilt)