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Can I use jet fuel??

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Old 10-24-2006, 04:47 PM
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Can I use jet fuel??

I have access to jet fuel (JP-5) that was only pulled for sampling, and is clean. We use it in our Hummvees and other diesl engine periodically. Anyone know of any ill effects from running this in my truck everyday? Would it be best cut with #2?

Thanks!
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Old 10-24-2006, 08:01 PM
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Definetly not a rocket scientist, no idea on if it will work (I'd imagine it would though)...


...but I am a pilot, and I know for a fact jet fuel around here is a good bit more expensive than diesel.
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Old 10-24-2006, 08:16 PM
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You can run it straight, but it act similar to running straight #1 or kerosine. It will be down on power and it lacks the lubricity to run full time. Jet fuel is thin enough that it makes a better solvent than it does a fuel.

Mixed with #2 it will make a great winter fuel....or you can use it periodically as an injector cleaner.
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Old 10-24-2006, 08:32 PM
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From what I've read there is NO lubricant in jet fuel.
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Old 10-24-2006, 08:36 PM
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Just mix it with some BD and it will work fine
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Old 10-24-2006, 10:20 PM
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Quote:
Originally Posted by bigredtruckmi
From what I've read there is NO lubricant in jet fuel.
If you've ever heard a diesel run on it it you'd believe it too. It'll burn it fine, but it's a loud, knocking, rattling beast. Not a pleasant sound at all.
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Old 10-24-2006, 10:52 PM
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I just have one question.....Do you have a jet to run jet fuel in?
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Old 10-25-2006, 08:50 PM
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I don't personally own a jet, but my flightline has about 25 heicopters that do. I was just asking because after some recent financial strains, I've been looking to lighten up my fuel cost. I was thinking maybe dump a quart of oil into each 20 gallons or so, or do ya'll think that is even necessary? Or is it though that I'd best leave the JP-5 to turbines ??
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Old 10-25-2006, 08:53 PM
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First of all are you sure it's JP5 almost all the military is now running JP8. And like Bigredtruckmi said there's no lubricity in the JP fuels even less than kerosene. As long as you mix you may be alright but I would be careful. What ever is OK with kerosene I would go a little heavier on the diesel with the JP fuels.
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Old 10-25-2006, 08:56 PM
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Thanks Gun-Driver. Anyone ever used kero mixed with oil for lube?
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Old 10-25-2006, 09:04 PM
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Oh heck no. Bad idea. Nothing good can come from putting kerosine in the crank case.

You would be better off mixing 10-15% JP into the fuel tank.
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Old 10-26-2006, 12:07 AM
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Sorry- I meant that I would add oil to the JP-5 and then put it in my fuel tank to aid lubrication that the JP-5 is lacking.
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Old 10-26-2006, 01:06 AM
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Howdy y'all,

All these questions have been pretty much answered.

Go here for the info.

It's a fairly large PDF file.

Below is a sample of what's in the article.


Since Jet-A is not colored.......if I had access to "free" fuel I'd run it in my 6.5L diesel. I'd probably mix in a little lub improver like 10w non-detergent oil or 2cy oil etc. But if you read the above article it indicates that newer diesel injection systems have not had any problem with kerosene based fuels. The military intends to run EVERYTHING on it.



Cheers!


Rick




USE OF JP-8 FUEL IN GROUND EQUIPMENT
The following is a listing of questions with answers frequently raised regarding use of JP-8 fuel in
diesel fuel consuming vehicles and equipment. These responses have been coordinated with the U.S.
Army Tank-Automotive Command and Headquarters, U.S. Air Force.

a. What is JP-8?
Answer: JP-8 is a kerosene-type aviation turbine fuel. It is procured under MIL-T-83133 and
is interchanged within NATO under NATO Code Number F-34.

b. What is the difference between JP-8 and JET A-1?
Answer: JET A-1 is essentially identical to JP-8 except it does not contain the three additives
required in JP-8; namely, the fuel system icing inhibitor, corrosion inhibitor, and
static dissipator additive. JET A-1 is the standard fuel used by all commercial airline
companies worldwide, except within the U.S. where JET A is principally used. JET
A-1 differs from JET A only in its lower freeze point requirement; i.e., -40C (-40F)
versus 47C (-53F) for JET A versus JET A-1.

c. What is the difference between JP-8 and JP-4?
Answer: JP-4 is not a kerosene-type aviation turbine fuel, but instead is approximately a 40:60,
50:50, or 60:40 mixture of kerosene with naphtha (e.g., a gasoline-type blending
stock). It is called a "wide-cut fuel". JP-4 is procured under MIL-T-5624 and has
been interchanged-within NATO under NATO Code Number F-40. It is not usually
considered as an acceptable substitute for diesel-fueled equipment. F-40 has been the
standard aircraft fuel for NATO aircraft until 1986 when NATO nations agreed to the
conversion from F-40 to F-34.

d. What is the difference between JP-8 and JP-5?
Answer: JP-5, like JP-8, is a kerosene-type aviation fuel. However, it differs from JP-8 in
having a higher flash point specification requirement; that is, 60C (140F) minimum
versus 38C (100F) minimum for JP-5 vs. JP-8. This fuel is used for all sea-based
aircraft in lieu of JP-8 because of safety requirements for on-board aircraft carrier
operation. JP-5 is procured under MIL-T-5624 and is interchanged within NATO
under NATO Code Number F-44.

e. What is the difference between JP-8 and diesel fuel?
Answer: JP-8 is primarily a kerosene whereas diesel fuels are generally either a distillate
blend, a distillate and kerosene blend, or a kerosene blend depending on the grade of
diesel; i.e., DF-2, DF-1, or arctic grade diesel fuel (DF-A). In most instances, DF-A
and some DF-1 fuels are essentially kerosenes which are very similar to JP-8 fuels.


(I bolded the above text because few people know that diesel #1 IS kerosene!)

Last edited by HT32BSX115; 10-26-2006 at 01:16 AM.
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Old 10-26-2006, 12:20 PM
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Only thing is that the miltary has its own specs for fuel delivery systems. They also can burn perfume and run good. (smell good too)
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Old 10-26-2006, 12:41 PM
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According to that Army study you sent in PDF, it stated that using JP-8 (lower flash point than JP-5) the addition of oil for lubricating purposes was not necessary-hmmm, I guess "according to them" I'd be good to go running JP-5 with no ill effects. Cool, that'll help cover some of the cost of me having to replace my punctured fuel tank. Long uncomfortable story hehe.
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