I think you'd wind up with "E43".
Not a good scene, your block learn/fuel integrator can probably only compensate by 15%... and E43 would have 21% less "zip".
I would keep it below ~15% by volume as purchased at the pump, or even less if the "regular" fuel is 10% ethanol.
Not to mention what could happen to your fuel system parts if they weren't designed for it.
Not a good scene, your block learn/fuel integrator can probably only compensate by 15%... and E43 would have 21% less "zip".
I would keep it below ~15% by volume as purchased at the pump, or even less if the "regular" fuel is 10% ethanol.
Not to mention what could happen to your fuel system parts if they weren't designed for it.