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03-24-2016, 07:51 PM
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Join Date: Aug 2008
Location: Texas, Fort Worth
Posts: 1,237
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Quote:
Originally Posted by funflying
I've used ethanol free 91 without issue. I have 110hrs over 3 years now.
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Same here, over 800 hours since 2010 with out issue. 
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John
RV12 N1212K
Flying Since June 2010
1020 Hours as of 9/30/2017 
Johnrv12@icloud.com
RV14 Wing, arrived and building at Rdog's new Hanger at 16X
S/N 140014 
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03-24-2016, 07:56 PM
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Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,246
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Quote:
Originally Posted by f1rocket
Actually, everyone flying a Rotax should be referencing the Rotax Service Instructions for use of the proper fluids in and on your engine. They change sometimes. The proper service instruction is SI-912-016R8 (as of today). Here's the link.
Lots of good stuff here. Its "must read" material for properly maintaining your Rotax. |
And by golly, it says the same thing. 91 AKI.
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Dale
Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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03-25-2016, 07:33 AM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Thank you all for the clarification on the 91 AKI requirement. I was under the wrong assumption that 91 was the intermediate fuel grade sold in most service stations that I remembered as inadequate for the Rotax. As a matter of fact the intermediate grade is 89 not 91. My mistake!
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03-25-2016, 08:32 AM
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Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 931
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I guess the next obvious question is how trustworthy the octane rating on the pump is. I don't have any way to test the actual octane that I know of. If 91 is our minimum and the pump is labelled "91 octane", can we trust it?
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Tom
Port Orange, Fl
EAA #51411
RV-12 N121TK ELSA #120845; first flight 06/10/2015; 700 hrs as of 02/2020
RV-12 N918EN ELSA #120995 Eagles Nest Project; first flight 05/18/2019
SPA Panther N26TK; First Flight 03/13/2020
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03-25-2016, 12:18 PM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Quote:
Originally Posted by tomkk
I guess the next obvious question is how trustworthy the octane rating on the pump is. I don't have any way to test the actual octane that I know of. If 91 is our minimum and the pump is labelled "91 octane", can we trust it?
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Good point! Only hope is that a major brand has a reputation to live up to but I would be concerned buying from a no brand station. |
03-25-2016, 02:39 PM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Quote:
Originally Posted by WingedFrog
Good point! Only hope is that a major brand has a reputation to live up to but I would be concerned buying from a no brand station.
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In our area there is reason to believe all non-contaminated gasoline is coming from the same distributor regardless of the sign on top of the station.... |
03-25-2016, 02:41 PM
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been here awhile
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Join Date: Dec 2004
Location: North Alabama
Posts: 4,300
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Quote:
Originally Posted by WingedFrog
Good point! Only hope is that a major brand has a reputation to live up to but I would be concerned buying from a no brand station.
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In our area there is reason to believe all non-contaminated gasoline is coming from the same distributor regardless of the sign on top of the station....
Our local stations (regardless of "brand") that had 93 non-ethanol switched to 90 at the same time a few months ago. |
03-26-2016, 05:50 AM
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Join Date: Feb 2006
Location: Peachtree City, Georgia
Posts: 440
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Quote:
Originally Posted by Sam Buchanan
In our area there is reason to believe all non-contaminated gasoline is coming from the same distributor regardless of the sign on top of the station....
Our local stations (regardless of "brand") that had 93 non-ethanol switched to 90 at the same time a few months ago.
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It's probably the distributor. Here in the Atlanta area, there is only one distributor of ethanol free gas - Green Oil Company. All of it is the same, 90 octane, only the price varies from station to station.
John
__________________
John Goodman - 40572
First flight was 25 June, 2011
N711JG
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03-26-2016, 06:34 AM
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Join Date: Aug 2014
Location: Ocala, FL (Leeward Air Ranch)
Posts: 118
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A fuel distributor told me that removal of the 10% ethanol from 93 AKI premium motor gasoline reduces the rating to 90 AKI. Many marinas offer that variation as some older boat engines can not tolerate ethanol.
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Bruce
Panther - Building 2019
RV-12 - Flying 2016; Sold 2018
RV-10 - Sold 2018; Flying 2018
SeaRey - Flying 2012; Sold 2017
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03-26-2016, 08:13 AM
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Join Date: Aug 2015
Location: Lopez Island, Wa.
Posts: 178
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one comment
I know from past experience that if you fill up the first small amount is what the person ahead of you used..ie; 87 octane..that is what was in hose and pump ...so when I filled up scooter which took very small amount..2 gallons a good portion was what ever the person ahead of me used..don't know if it is relavent...just food for thought...
__________________
Retired Firefighter/Para-Medic
Sold 182 Skyelane
sold Super Cub
Building RV 12 E-LSA
Paid thru 2016, even though exempt
RV 12 completed, waiting DAR
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