So as we all know non ethanol gas is not easy to come by. You can find it but it can be way out of the way. I have a 2001 Yamaha 115 4 stroke and have owned for a little over a year. Motor runs fine. I use a fuel water separator and Sta-bil ethanol treatment. Is this all I need to do? Will this protect my engine for the long term? Thoughts on Ethanol if the above precautions are taken. Thanks in advance!!!