What is your reason for using it? I assume that you are looking for safe winter storage? Your best bet for winter storage is to drain the carb and tank of the E15 fuel and fill-up with a non-ethanol fuel. If you don't have access to non-ethanol fuel from a pump, you can use "engineered fuel" that you can purchase at Lowes or Home Depot. While that stuff is expensive (around $20/gal), you don't need to fill your tank with it. Run your tank low (or drain it) and then add the engineered fuel. Go out for a 10 minute ride and then top off the tank with your favorite pump gas. You will have fuel in the carb that has very little ethanol and will last for years. In the fuel tank you will also have fuel that will last well into (and probably past) the summer, so when you start your bike in the spring you'll be good to go.
Here's a primer on fuel stabilizers. They do work...to a degree, but are not perfect:
https://www.youtube.com/watch?v=UvS_D4_lF5UHere's some info on engineered fuel:
https://www.youtube.com/watch?v=r9Hvg210ZAE&t=1sLastly, check this website to find ethanol-free gas close to you. This is your best bet for winter storage:https://www.pure-gas.org/extensions/maps.jsp