Fuel types

[tigershark]

Question: Most outboard manufa

Question: Most outboard manufacturers specify 87 octane fuel. I have heard that since 93 is more stable when hot it could result in more carbon build-up in the combustion chamber.

What is everyones take or experience in this matter?
You would think more octane more power.

I was planning on using Shell 89.

What do you guys think?

 

[vics]

"87 is the minimum grade requi

"87 is the minimum grade required. There may be some advantage in using 89 but no benefit in using a higher grade

See http://www.evinrude.com/en-US/About.Us/FAQ/Oil.Fuel.htm#Q4"

 

[damal37]

will my lower unit from a 197

will my lower unit from a 1973 85 hp fit a 1965 90 hp johnson?

 

[vics]

"<font color=""119911""><font

"<font color=""119911""><font face=""times new roman,times,roman""><font size=""+1""> Dont know but you wont get many replies under a heading "Fuel Types"

Click on "start new discussion" at the head of the index and ask your question , giving it a sensible title that indicates what the question is about</font></font></font>"