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  #31  
Old 07-09-2018, 08:24 AM
TimO TimO is offline
 
Join Date: Feb 2005
Location: Wisconsin
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After leaving the 100LL and Kerosene sit undisturbed for 3 days now, it's still 100% unseparated. I don't believe it actually will ever separate. I see it highly unlikely that even after a long amount of time it would separate and collect at the bottom of the tank by the inlet. I have nothing better to do with my jar of fuel, so I will just continue to let it sit and see what it looks like in a few weeks.
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  #32  
Old 07-10-2018, 12:48 AM
mbauer mbauer is offline
 
Join Date: Nov 2015
Location: Nikiski, AK
Posts: 245
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Glad to see you drained and then refilled with pure 100LL.

Used to work in a refinery as a crude unit operator and then was promoted to the hydrocracker unit.

The diesel was pulled from the crude tower into a "stripper" which had two levels, bottom level was No. 2 diesel, next level up was No. 1 Diesel or Jet-A here in Alaska. From the very top of the stripper, lighter end vapors continue back into the crude tower to continue their upward journey to the proper levels before they were condensed and removed as a liquid.

It isn't as clean as 100LL, burns hotter and has different properties than the Avgas. Turbine engines can burn almost anything liquid that will maintain a fire.
Used to fly helicopters for the military, back of book had lots of different options for emergency fuel; only one that needed an inspection/rebuild after burning was Shell gasoline that had the TC3 additive.

I would not even try 1/2 cup of Jet-A mixed in Avgas in my Lycoming.

Best regards,
Mike Bauer
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  #33  
Old 08-05-2018, 09:10 PM
TimO TimO is offline
 
Join Date: Feb 2005
Location: Wisconsin
Posts: 435
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Well after this much time I have to call BS on having it separate out. My jar 100LL + Kerosene is still completely mixed and left undisturbed. I doubt it'll ever settle out.

I happened to talk to an FBO person this weekend that fills gas for a large scale aerobatic performer. One that most of you have seen before. They actually use the aux tanks as smoke oil tanks, and then after the show once the smoke oil is used up, they refill the tanks with fuel for the trip home. I would think that if the tiny bit of smoke oil was going to make a big difference, they'd never do that.

So while I support the idea of draining the tanks, I really doubt anything would have ever come of it had it not been drained. The percentage is just too low, and the mixture would have stayed mixed plenty long to burn down the tank and refill with fresh fuel.
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RV-10 N104CD - Flying 2/2006 - 1375+ hours http://www.MyRV10.com
RV-14 N14YT - Flying 6/2016 - 290+ hours http://www.MyRV14.com
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  #34  
Old 08-06-2018, 07:31 AM
Pallet Pallet is offline
 
Join Date: Nov 2006
Location: OH
Posts: 99
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Thanks for the report Tim. I figured they would at least mix. I doubt if such a small amount in your tank would even be noticeable. Everyone has to do what is comfortable for themselves.
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  #35  
Old 08-06-2018, 07:51 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
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Quote:
Originally Posted by TimO View Post
After leaving the 100LL and Kerosene sit undisturbed for 3 days now, it's still 100% unseparated. I don't believe it actually will ever separate. I see it highly unlikely that even after a long amount of time it would separate and collect at the bottom of the tank by the inlet. I have nothing better to do with my jar of fuel, so I will just continue to let it sit and see what it looks like in a few weeks.
It will be the same in 3 months.

Thanks for doing it. Many will still not believe it. Silly.
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  #36  
Old 08-06-2018, 08:49 AM
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Low Pass Low Pass is offline
 
Join Date: May 2006
Location: Houston
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Kerosene, gasoline, diesel, Jet A. All petroleum distillates. Came from the same barrel. They had to be *distilled* to be separated. I'm just an engineer and not a chemist. Even worked in a refinery for a number of years. But these products will never spontaneously separate.
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