Posts: 32886
Location: Rhinelander, Wisconsin | What additives do you use and exactly what ethanol issues are addressed?
Today's marine engines are designed to run on e10 (they have to be) and therefore are designed to run on that mix without overheating issues. As long as your water pump is working the water jacket will handle the engine temps just fine running e10.
This is especially true in the case of the engine you are running according to your posts.
I'd really like to clarify the additives you are using and what they claim to do. I have a breakdown from independent testing as to what the more popular additives actually accomplish.
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