Has exxon switched to 10% ethanol in texas? I have used almost exlusively exxon 93 since I had the car tuned. I have never seen the 10%ethanol stickers on the pumps of any station I normally use. I was at my sister's house in Ennis and stopped to fill up before heading back to Austin. The pump said 10% ethanol. I burned through that tank and filled up in austin. no sticker on the pump. Just put gas in on the way to work and the same station now says 10% ethanol. Is this an exxon only switch or is everyone going to make the change to 10%? I did some google searches but did not find any articles or press releases. Has anyone heard anything about this?