Go Back  RCU Forums > RC Airplanes > RC Jets
Reload this Page >

Oil in jet fuel...?

Notices
RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems

Oil in jet fuel...?

Old 05-27-2011, 02:29 AM
  #1  
petera38
Senior Member
Thread Starter
 
petera38's Avatar
 
Join Date: Sep 2007
Location: Smedjebacken, SWEDEN
Posts: 368
Likes: 0
Received 0 Likes on 0 Posts
Default Oil in jet fuel...?

Hi,

I´ve got a canister (20litres) with A-1 jet fuel with no markings to indicate whether I have mixed in 5% turbine oil or not. The colour of the content is: Light amber yellowish! As far as I know, jet A-1 fuel has no colour, it´s looks like water. I have stored the fuel for almost one year in a plastic canister made for gasoline.

Question is: How do I determine if there is oil mixed in or not? Any simple method to find out?

/Pete
Old 05-27-2011, 02:54 AM
  #2  
Meesh
My Feedback: (135)
 
Meesh's Avatar
 
Join Date: Jan 2003
Location: Dracut, MA
Posts: 2,798
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

See if you have 21 liters in the canister. You would have added 1 liter to the 20 liters if you added the oil.

Bob
Old 05-27-2011, 03:10 AM
  #3  
petera38
Senior Member
Thread Starter
 
petera38's Avatar
 
Join Date: Sep 2007
Location: Smedjebacken, SWEDEN
Posts: 368
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

That´s correct...if I got exactly 20 litres when tanking? The canister can take about 21-22 litres and they are usually rather generous when filling...
If you use turbine oil, which I did, someone told me that the oil will deposit at the bottom after aprox. one day? So all you should do was to shake the canister well and pour some of the fuel into a bottle. Then the oil would deposit at the bottom, after some time!? Worth trying...

/Pete

Old 05-27-2011, 03:46 AM
  #4  
Henke Torphammar
 
Henke Torphammar's Avatar
 
Join Date: Oct 2002
Location: Ljungby, SWEDEN
Posts: 1,966
Likes: 0
Received 1 Like on 1 Post
Default RE: Oil in jet fuel...?

Alot options of where none will give you an exact answer. Also if you fint out that there are no oil in it, would you dare to use yellow fuel for blending with new oil? the yellow color must have came from some where. naaah dump it in your diesel car and buy new fuel for the turbine.

Old 05-27-2011, 04:27 AM
  #5  
Guillermo Ibanez
My Feedback: (1)
 
Guillermo Ibanez's Avatar
 
Join Date: Nov 2004
Location: BarranquillaAtlantico, COLOMBIA
Posts: 977
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?


ORIGINAL: Henke Torphammar

Alot options of where none will give you an exact answer. Also if you fint out that there are no oil in it, would you dare to use yellow fuel for blending with new oil? the yellow color must have came from some where. naaah dump it in your diesel car and buy new fuel for the turbine.

Don't take risks. Fuel is not so expensive to risk your turbine.

Throw it away and buy new and mix it with new turbiine oil..

I usually throw away fuel when more than 6 months without use. Although Jet A1 has some additives to avoid micro organisms, after almost a year, one dont know and you can have problems with the UAT and the fuel filter.

BRG

Old 05-27-2011, 04:33 AM
  #6  
bcovish
My Feedback: (8)
 
bcovish's Avatar
 
Join Date: Feb 2002
Location: Austin, TX
Posts: 5,323
Likes: 0
Received 1 Like on 1 Post
Default RE: Oil in jet fuel...?

Pour a couple of ounces of it into a clear glass or jar and set it out in the sun. Will turn yellow if turbine oil has been added. If you have any kero that you know oil had not been added, do the same thing with the jar and set it beside the other jar, it should remain clear.
Old 05-27-2011, 05:52 AM
  #7  
Kelly Rohrbach
My Feedback: (1)
 
Join Date: Feb 2002
Location: KALISPELL, MT
Posts: 751
Likes: 0
Received 1 Like on 1 Post
Default RE: Oil in jet fuel...?

Like said above,
Dump it and get new fresh fuel with oil and I bet you will sleep better, I know I would.
Old 05-27-2011, 06:07 AM
  #8  
Ad Clark
My Feedback: (4)
 
Ad Clark's Avatar
 
Join Date: Nov 2002
Location: Kalispell, MT
Posts: 154
Received 2 Likes on 2 Posts
Default RE: Oil in jet fuel...?

Considering your investment of time and money I would treat yourself to some fresh fuel and a quart of turbine oil as others have already recommended-Your turbine beserves it!
Old 05-27-2011, 06:08 AM
  #9  
BlueBus320
My Feedback: (57)
 
Join Date: Mar 2002
Location: Rockville Centre
Posts: 1,664
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

I vote "dump it". The risk far outweighs the benefit when price of turbine & jet considered.
Old 05-27-2011, 06:33 AM
  #10  
hooker53
My Feedback: (106)
 
Join Date: Nov 2003
Location: Martinsville, VA
Posts: 2,540
Likes: 0
Received 1 Like on 1 Post
Default RE: Oil in jet fuel...?

A little yellow? I thought Jet-A was a little dingy yellow??
Old 05-27-2011, 07:41 AM
  #11  
John Redman
My Feedback: (8)
 
Join Date: Dec 2001
Location: Lancaster, CA IL
Posts: 2,317
Likes: 0
Received 1 Like on 1 Post
Default RE: Oil in jet fuel...?

Or you could just add more oil (correct amount for the amount of fuel) and you will be fine. if the oil is in there, the extra won't hurt anything.
Old 05-27-2011, 08:59 AM
  #12  
rcjetsaok
My Feedback: (7)
 
rcjetsaok's Avatar
 
Join Date: Dec 2001
Location: Texas
Posts: 2,565
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

I say set fire to it and see how dark the smoke is.... That will tell you if it has oil !!!!! Do it all at once !!!!

Danno
Old 05-27-2011, 10:56 AM
  #13  
petera38
Senior Member
Thread Starter
 
petera38's Avatar
 
Join Date: Sep 2007
Location: Smedjebacken, SWEDEN
Posts: 368
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

Thanks for all the answers.

I´ll dumb it!

/Pete
Old 05-27-2011, 11:30 AM
  #14  
invertmast
My Feedback: (23)
 
invertmast's Avatar
 
Join Date: Dec 2003
Location: Capon Bridge, WV
Posts: 7,995
Received 43 Likes on 34 Posts
Default RE: Oil in jet fuel...?

Jet A-1 actually has a straw-yellow color to it. It is not 100% water-clear, but the yellow-straw tint is very light.
Old 05-27-2011, 01:27 PM
  #15  
fast jets
My Feedback: (2)
 
Join Date: Aug 2004
Location: Rosenfeld, MB, CANADA
Posts: 94
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

Your crazy for dumping it, put a small jar of it in the sun for a couple of hours and if it turns dark yellowish color it has oil in it. It is as easy to tell as night from day. Or do as John Redman sugests, add more oil it will never make any differance.

John
Old 05-27-2011, 01:31 PM
  #16  
rctech2k7
Senior Member
My Feedback: (1)
 
rctech2k7's Avatar
 
Join Date: May 2009
Location: Miami, FL
Posts: 377
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?


ORIGINAL: petera38

Hi,

I´ve got a canister (20litres) with A-1 jet fuel with no markings to indicate whether I have mixed in 5% turbine oil or not. The colour of the content is: Light amber yellowish! As far as I know, jet A-1 fuel has no colour, it´s looks like water. I have stored the fuel for almost one year in a plastic canister made for gasoline.

Question is: How do I determine if there is oil mixed in or not? Any simple method to find out?

/Pete
Get a sample and dry it, it will leave oil or lubricant residue. Also the volume of Jet A in the container will help... Compare it with plain Jet-A.
Old 05-27-2011, 01:41 PM
  #17  
ddennison
My Feedback: (15)
 
Join Date: May 2003
Location: rochester, MN
Posts: 2,456
Received 2 Likes on 2 Posts
Default RE: Oil in jet fuel...?

+1 on adding extra oil. I have done this once or twice when I couldnt remember!
Dave
Old 05-27-2011, 02:30 PM
  #18  
gooseF22
 
gooseF22's Avatar
 
Join Date: Aug 2006
Location: Fort Wayne, IN
Posts: 2,589
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?



I have had kero break down, but it was 18 months old, but I would still dump it.. cheap insurance
Old 05-27-2011, 07:12 PM
  #19  
telejojo
 
Join Date: Nov 2006
Location: HUNTSVILLE, AL
Posts: 830
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

My jet (super bee) has been sitting since last summer should I get the fuel out of it or fly it?
Old 05-31-2011, 10:55 AM
  #20  
rctech2k7
Senior Member
My Feedback: (1)
 
rctech2k7's Avatar
 
Join Date: May 2009
Location: Miami, FL
Posts: 377
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?


ORIGINAL: telejojo

My jet (super bee) has been sitting since last summer should I get the fuel out of it or fly it?
For that length of time you should remove it and do preventive check... That is to make sure no obstruction, filters and clunks are in good condition. Settle it down and check if it's free from contamination then fill it back thru the filtered pump with suction clunk a little higher from the bottom.

Old 05-31-2011, 11:07 AM
  #21  
rctech2k7
Senior Member
My Feedback: (1)
 
rctech2k7's Avatar
 
Join Date: May 2009
Location: Miami, FL
Posts: 377
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?


ORIGINAL: ddennison

+1 on adding extra oil. I have done this once or twice when I couldnt remember!
Dave
Not bad to get an extra oil since it will turn into gas and burn, actually better compare with no lubricants at all.
Old 05-31-2011, 11:10 AM
  #22  
highhorse
 
highhorse's Avatar
 
Join Date: Nov 2006
Location: Memphis, TN
Posts: 2,328
Received 7 Likes on 6 Posts
Default RE: Oil in jet fuel...?

I KNOW that my memory is crappy, so I never, never, never buy fuel without pouring the oil into the container FIRST.

Besides ensuring a thorough mix job, I know that any fuel I have laying around already has oil in it.
Old 05-31-2011, 11:48 AM
  #23  
mr_matt
My Feedback: (10)
 
mr_matt's Avatar
 
Join Date: Dec 2001
Location: Oak Park, CA,
Posts: 10,412
Likes: 0
Received 6 Likes on 5 Posts
Default RE: Oil in jet fuel...?

If you are worried about too much oil, add oil to this unkown 20 liters, and mix it with another 20 liters that you know is mixed right.
Old 05-31-2011, 04:19 PM
  #24  
GSR
My Feedback: (145)
 
Join Date: Oct 2002
Location: Seal Beach, CA
Posts: 1,970
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Oil in jet fuel...?

Same as Matt, I have done this in the past. Just add the proper amount or oil to the fuel in question and then parcel it out over the next few cans so the mixture is not that out of balance. Scotty
Old 06-01-2011, 01:22 AM
  #25  
petera38
Senior Member
Thread Starter
 
petera38's Avatar
 
Join Date: Sep 2007
Location: Smedjebacken, SWEDEN
Posts: 368
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Oil in jet fuel...?

I did a test with fuel containing oil and fuel of the suspected "No oil in fuel" type.

Poured 100 cc of each into a plastic jar and placed both in the sun. After one day they both showed smal sediment bubbles of "something" at the bottom, which I suppose is turbine oil? I didn´t notice any remarkable change of colour. However the suspected " no oil fuel" has been stored in a red plastic cannister, which is normally recommended for gas. I suspect the colour (yellow amber) might come from the cannister? It´s noticeably darker than my other fuel in spite using the same turbine oil. But different type cannisters.
Would you use it or dumb it?

/Pete

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.