2 Pcs Reusable Ethanol Tester E85, Wide Mouth Fuel Pressure Testers Bottle, Gasoline Oil Analysis Kit for E85 Ethanol Levels to Maintain Peak Engine Performance, Clear Results in Minutes

E15 has been available for a while now, the rule change just allowed it to be sold during the summer. By law it has to be labeled as E15 and is usually sold as 88 octane. https://www.amazon.com/Dunkive-Reusable-Gasoline-Maintain-Performance/dp/B0D31GBM9PYou can test it to make sure.