Here is an easy test to see if your fuel has ethanol in it.
1. Take a small (narrow) jar and place a small amout of water in it
2. With a "sharpie" marker, mark the water level in the jar
3. Pour your fuel into the jar at a ratio of 10:1 (10 parts fuel to 1 part water)
4. Cap the jar and shake it vigorously
5. Let it sit for a few minutes and then examine the water level in relation to your mark. If the level is now higher than the mark, the ethanol that was present in the gasoline has separated out and mixed with the water- if the level is still at the mark, no ethanol is present.
This is an easy test to see if your gasoline has ethanol.