Winter storage question.....

Sea foam is a good additive for your fuel,i use it in everything.

Sea foam is good, but I have used the Mercury products and they are excellent.
This is what I use to pickle an engine over winter.
https://www.amazon.com/dp/B00XFD3D44/?tag=joeychgo-20

and this is what I use to clean it up for spring, or anytime I suspect the rings are getting sticky..
https://www.amazon.com/dp/B000XBFL0K/?tag=joeychgo-20