Recently, I saw a kit for checking the level of ethanol in pump gas. It looked very simple to use, basically mix water and gas together and then see what separates out. A little pricey for what it was and I got to thinking about how I could check it with a graduated cylinder. I got to looking around a little more and found this! The test kit I found: https://smile.amazon.com/dp/B073HLS...olid=37FPUUXHT633A&psc=1&ref_=lv_ov_lig_dp_it There's a good video on that link. I try to buy non-ethanol gas when possible, but the recent trip to Carlisle made that impossible. The places off Rt 81 don't have anything except the ethanol laced stuff. I'm curious of the percentage when I start putting non ethanol in and it gets mixed.