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Jan 23rd, 2013
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Re: Yamaha 250 Sho fuel choice??? [Re: Dubee] #13381328 12/24/19 02:25 AM
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Greg W Offline
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Originally Posted by Dubee
Originally Posted by Greg W
During the winter, does the gas still have ethanol? I thought they only put in ethanol during the summer.

Really?


I was told that a long time ago. Not something I've ever tracked. As my boats on a lift at a marina, I'm getting ethanol free gas regardless.

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Re: Yamaha 250 Sho fuel choice??? [Re: Greg W] #13381334 12/24/19 02:40 AM
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TomRom Offline
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Nope. They do change the formulation to a "summer blend" for the Chicago area to meet air emission requirements. There could be some other areas of the country that they do that as well. But ethanol is the main ingredient the EPA requires for air emissions to meet the federal standards. It can get complicated what and when certain gasoline blends have to be supplied to specific areas.

Originally Posted by Greg W
Originally Posted by Dubee
Originally Posted by Greg W
During the winter, does the gas still have ethanol? I thought they only put in ethanol during the summer.

Really?


I was told that a long time ago. Not something I've ever tracked. As my boats on a lift at a marina, I'm getting ethanol free gas regardless.

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13381740 12/24/19 05:02 PM
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This never ceases to amaze me. Some one will go buy a $50,000 -$80,000 rig and never read the Owner's manual.

I can assure that Yamaha knows what is the proper fuel to run, much better than your brother in law who knows a guy that works on motors or some yahoo that posts on the internet.

Find the Owner's manual, read it, follow it.

If the book says 87, then run 87. If it says 103 aviation fuel, then find some and run that.

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13381811 12/24/19 06:11 PM
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Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13382991 12/26/19 02:24 AM
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LakeTylerMan Offline
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I run 91 Octane ethanol free.

Re: Yamaha 250 Sho fuel choice??? [Re: LakeTylerMan] #13383046 12/26/19 04:05 AM
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Dubee Offline
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Originally Posted by LakeTylerMan
I run 91 Octane ethanol free.

Why?

Re: Yamaha 250 Sho fuel choice??? [Re: Dubee] #13383098 12/26/19 10:21 AM
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Good stuff.
Recommendations are minimum octane.

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13383217 12/26/19 02:29 PM
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Jarrett Latta Offline
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QuikTrip usually carries ethanol free 90 octane. I use it in saws, etc. Murphy has ethanol free 87

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13383300 12/26/19 03:52 PM
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rxkid2001 Offline
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2012 VF250 manual
Don’t see anything about going too high on octane, just too low.

Last edited by rxkid2001; 12/26/19 03:54 PM.
Re: Yamaha 250 Sho fuel choice??? [Re: rxkid2001] #13383468 12/26/19 07:11 PM
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David Burton Offline
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They changed the manual. They now recommend mid-grade for North America beginning around 2015 model years from what I can tell. It does still has the note about minimum pump octane and a modified (slightly) statement about ethanol content due to the changes with e15 & e85


David Burton
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Re: Yamaha 250 Sho fuel choice??? [Re: LakeTylerMan] #13383623 12/26/19 11:02 PM
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Dubee Offline
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Originally Posted by LakeTylerMan
Good stuff.
Recommendations are minimum octane.

And you gain nothing running a higher octane

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13383854 12/27/19 02:53 AM
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I’ve ran 87 grade 100% gas in mine and zero problems

Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13383938 12/27/19 04:06 AM
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bronco71 Online Content
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Are these octane ratings calculated as RON, MON or PON?


1999 Triton TX21/225 Mercury Optimax
Re: Yamaha 250 Sho fuel choice??? [Re: SkeeterB] #13383972 12/27/19 06:40 AM
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Jeff From Iowa Offline
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The higher the octane the slower the fuel burns. You would have to compare to actually know if there is a gain with anything over 87. Usually mpg and power go hand in hand.

Re: Yamaha 250 Sho fuel choice??? [Re: Jarrett Latta] #13383978 12/27/19 08:01 AM
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Originally Posted by Jarrett Latta
QuikTrip usually carries ethanol free 90 octane. I use it in saws, etc. Murphy has ethanol free 87


Never seen ethanol free 90 octane at QT in my life and I buy gas there alot

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