which octane gas?

Cashpoboy

Cadet
Joined
Apr 15, 2004
Messages
13
Is it better to run on higher octane 93 or better to run on 86 or 89. I have a 2001 Johnson 90.
 

Duck Loads

Petty Officer 3rd Class
Joined
Apr 15, 2003
Messages
86
Re: which octane gas?

I have been told that premium (93) fuel has a slower burn rate than regular (87) and can actually decrease your power. This is what I was told for my crossflow v-6 anyway. Sometimes I get a little pinging on 87 and use the 89 octane. Winter gas seems to be different than summer formula.<br /><br />Be safe,<br />Duck L.
 
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