E10 is common in almost all gasoline these days in states that don't meet EPA air quality standards. As I think about it, Oklahoma is the only state I have been in recently that doesn't have to use E10. I actually saw fuel stations advertising what they called "Real Gas". I haven't noticed any trouble with E10 in my small engines yet, but E85 is another story entirely. YMMV

Now ULSFD (Ultra Low Sulfur Diesel) is another story all together. The reformulation of said Diesel (waste by-product of distillation) took a really affordable fuel and drove the price through the roof. Maybe someone can explain that on for me. I was advised by Ford that my 2005 F350 needed an additive to make-up for the sulfur removed from the fuel. Again, YMMV

Maybe a chemist from the Houston area could help on this one???????