What Fuel??

Dreads0518

Cadet
Joined
Dec 14, 2009
Messages
20
Found this on the Yamaha Outboard site:

Question
What octane fuel should I use in my Yamaha Outboard?

Answer
Most Yamaha outboards are made to run on 86-octane fuel (R+M/2 or ?pump? octane). There are some exceptions which are designed to run on 89 octane. Those engines are the F250, F300, F350, and Four-Stroke Sport models.

I have a 1993 55hp Yamaha, when I bought it (6wks ago) the seller told me all he used was 93 octane.
Should I continue to use 93, or can I use 87 octane??
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: What Fuel??

Use 87 octane regular, Dreads. Only high performance 4 strokes can benefit from the higher octane.
 
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