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What octane to run four stroke Yamaha
#12461205
10/10/17 11:47 PM
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Joined: Apr 2006
Posts: 541
chas1
OP
Pro Angler
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OP
Pro Angler
Joined: Apr 2006
Posts: 541 |
I just purchased a 2012 four stroke 70 hp Yamaha, any suggestions on what gasoline or octane rating to run in this .Also what’s the best fuel additive, thanks for your help
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12461347
10/11/17 01:20 AM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
When in doubt always use mid-grade. Additives are like Ford or Chevy. You can use Yamaha ring-free or 28 others. I prefer Sea Foam because it does everything that the others do + it is a real good fuel preservative. Keeping fuel good for 3 years.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12461354
10/11/17 01:26 AM
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Joined: Nov 2014
Posts: 23,493
SteezMacQueen
TFF Guru
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TFF Guru
Joined: Nov 2014
Posts: 23,493 |
87 octane( maximum 10%ethanol) and 1 ounce of Yamaha Ring Free per 10 gallons as insurance. Though the ring free isn't required per the owners manual. If you don't use the boat often, then sea foam or stabil 360 marine is a wise choice to stabilize the fuel a little.
Eat. Sleep. Fish.
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12463315
10/12/17 07:27 PM
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Joined: Apr 2006
Posts: 541
chas1
OP
Pro Angler
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OP
Pro Angler
Joined: Apr 2006
Posts: 541 |
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12464697
10/13/17 10:45 PM
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Joined: Mar 2016
Posts: 1,827
dk2429
Extreme Angler
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Extreme Angler
Joined: Mar 2016
Posts: 1,827 |
Just run 87 in it.. Sea Foam in everything I own. Stuff works miracles
Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12475079
10/22/17 10:36 PM
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Joined: Mar 2005
Posts: 1,621
psycho0819
Extreme Angler
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Extreme Angler
Joined: Mar 2005
Posts: 1,621 |
I run super in my F70 with seafoam addidtive. Mine's a 2013 and has been getting fed the same combo all its life. Runs like a top.
I could be wrong, but I think my owners manual calls for minimum 89 octane.
If you're not living on the edge, you're taking up too much space!
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Re: What octane to run four stroke Yamaha
[Re: chas1]
#12476666
10/24/17 06:07 AM
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Joined: Apr 2015
Posts: 1,818
Curtbass
Extreme Angler
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Extreme Angler
Joined: Apr 2015
Posts: 1,818 |
My 13' SHO calls for 89 octane. I ALSO run ethanol free 87 octane in my older Mercury motors. Haven't had ANY fuel related issues in motors/fuel lines/bulbs etc for over 2 years.NO PHASE SEPERATION/MOISTURE collecting problems!!(knock on wood)!!! It costs a little more per gallon, but, its WORTH .25-.40 cents a gallon more, to NOT have ethanol issues. I run 89 octane non ethanol & Yamaha Ring free & Stabil 360 in my SHO 250 Yamaha & use 87 octane ethanol free with Mercury ring/carbon additive & Stabil 360 in my Mercs. I ALSO install & maintain fuel/water separator filters on ALL my boats. Lookup pure-gas.org app on line. All U.S individual states & Canadian Locations. Find Tx at top of listed states & click. It gives all locations in each state that sells ethanol free gas, which octane ratings, address of locations & phone# of those locations. I do know WalMart Murphy station in Weatherford sells 87 ethanol free fuel for the closest one to Stephenville or I think there may be a location in Dublin Tx west of Stephenville. Good luck & avoid ethanol problems period, by doing this. PS: I have also started running it in my Chevy pickup that I tow with. Better fuel mileage empty & towing.
Last edited by Curtbass; 10/24/17 06:24 AM.
ELITE POWER SYSTEMS/ Elite Fishing Products Lithium Battery & Charging Systems, Soft Plastics, Tackle,Tokyo Rigs Tight lines & stay safe out there.Gods blessings
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