If you are looking to figure out your actual ethanol content for an ethanol tune our calculator below is a great tool. We do carry tools to help you measure the ethanol content of your fuel. The most convenient tool we offer is a digital ethanol gauge kit, which utilizes a sensor that gets installed in the fuel line. This kit comes with a digital gauge that can be installed inside of your vehicle so you always know exactly what fuel you are running.
We also carry a manual Holley E85 test kit. These kits are inexpensive but they do get the job done. To use these kits you need to put a sample of e85 in the test tube, along with some water. Once the mixture settles out you get a good indication of the actual ethanol content. Basically making you look like a mad scientist at the gas station.