Correct fuel octane for 76 evinrude135hp

jimpittman

Petty Officer 2nd Class
Joined
Aug 14, 2002
Messages
102
Hey guys,<br />I am running an old evinrude and am idling a lot lately running crab nets. I am using a mid range octane gas (89 octane) Can i go to a premium grade gas (93 octane) without damaging the motor? <br />Just what is safe or what would you experienced guys do?<br />Thanks,<br />jimpittman
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Correct fuel octane for 76 evinrude135hp

Hi, Jim.<br /><br />Your engine will perform better on unleaded, alcohol-free regular, 87 octane.<br /><br />Higher octane fuel is not higher quality, it just survives high compression better.<br /><br />Good luck. :)
 

jimpittman

Petty Officer 2nd Class
Joined
Aug 14, 2002
Messages
102
Re: Correct fuel octane for 76 evinrude135hp

Thanks Ancient Mariner!!<br />You just saved me several dollars every fill up!!<br />Appreciate the come back!!!<br />jimpittman
 

SeaMasterZ@aol.com

Lieutenant Commander
Joined
May 21, 2003
Messages
1,924
Re: Correct fuel octane for 76 evinrude135hp

howdy JB ... I hate to buttt heads with ya, but everything I have read says that 89 octane mid grade is better, and here is why ... the motors are under constant strain, continually going uphill as it were ... and as a former Texaco Petroleum Transfer Engineer :eek: I can tell ya that the base 87 stock is crap, all the additives and propagation retarders ... er, anti knock compounds ... are in the additive<br /><br />Yes, two cycles are low compression ... but they are stressed, and the way they are cranking out swill these days ... bubbas gas and go, et al .. I think that couple of bucks is worth it for the fuel cleaners and such, should keep that carbon from building up ... <br /><br />Is it true that Citgo is using alcohol in the fuel these days? I had heard Getty was using methanol too, lol, Corn Squeezins is good for after a day on the water, but not while in the water!!<br /><br />PS I am a cheapskate, lol, and with the way those Johnsons are going to gobble fuel, Ill be sure to keep an eye on what the big gun Guru's have to say about this ... but in my readings just in the past posts on here, it seems that mid grade is the way to go, I have to go get the One Woman Woo Hoo Parade and the Little Pain in the Buttt thats tagging along with her from the airport, shes been gone a week, so I prolly wont be on til late late LATE tonight, lol, heres hoping anyway!<br /><br /> :p
 
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