jet diesel fuel?

[Forrest Nearing]

my buddy works at a local airport fueling planes... he offered to fill my truck (140 gal capacity) with jet diesel...



I know av-gas is a little dry, but it works good in our turbo/gas cars, but I don't want to risk any damage on my truck...



what's the word on jet diesel?



thanks,



Forrest

 

[JConley]

Most likely it is either JP-8 or Jet-A. Both of these will be just fine in the Cummins. Jet fuel is dryer than standard #2 diesel, but you can always add some lube additive to the fuel to make it like #2. For that matter, you could dump a few quarts of cheap motor oil, into the Jet A to increase its lubrication properties. If you are near central Texas, let me know where this guy is!!



Forgot to mention... The Avgas that you are getting is 100% pure octane, and it is the best gasoline that you can get. Premium fuel is nothing more than the 89 octane stuff with some avgas mixed in to raise the octane rating. Midgrade fuel is premium gas with more of the cheap stuff mixed in. The reason avgas is dryer than gasoline is because avgas is a byproduct of the refining process when making the 89 octane gasoline.

 

[illflem]

Jet A is just highly filtered #1 diesel (kerosene). Not sure if you need #1 or not since there is no location or signature for you. #1 and #2 are blended together routinely for northern winters, in fact you would be hard pressed to find unblended fuel right now. If you are going to use it, especially with a 24 valve I'd mix it at least 50/50 with #2 diesel and a lubricity additive. With a 12 valve you can skip the additive. Don't add motor oil or ATF to your fuel, it's not designed to burn and will leave engine damaging ash deposits, only use an additive designed for diesel. You won't get as good of mileage or power with the jet fuel as it contains less btus, but the price sure sounds right.

 

[BFC]

VP44 (If you own a 24V) lubes itself with fuel, put some additives in it or it might turn out to be an expensive tank of "FREE" gas. I work on private aiport and the 2 Diesel that we have run on JET-A with lube no problem.



Octane is just an Anti-detonation compound that can be added to gas, not much to do with "purity".



My 2c



Glenn

 

[JConley]

I was keeping it kinda simple. The byproduct of refining gasoline produces many things. Mixing two of the byproducts together (forgot the exact ones) creates 100 octane fuel. This fuel is 100LL avgas. Refineries only make 89 octane gasoline. They mix the anti-detonation compound (100 octane avgas) onto it to increase the octane rating of gasoline.

 

[Doubleclutch]

AVgas

Not to drift too far off the subject. My old Taylorcraft choked quite a bit when switching from 80 octane avgas to 100LL. Reason- the 100LL has 4 times as much LEAD in it as the 80. Don't be in a hurry to burn the 100LL in modern cars with cat. converters. Mogas really is unleaded! Hi Bill!

Greg

 

[JR2]

I work in the oilfields of Northern Alaska and all we burn in our trucks up here is Jet-A. And we don't run any additives in it. Just pump it in the truck. The trucks get terrible milage (Like maybe 6-8 mpg in a pickup) and are hogs but the fuel is free. We only keep the trucks 3 years because they are leased and don't see many problems. The trucks are all fords and chevys because dodge does not make a crew cab or a "plain jane work" version. I sure would hate to be the guy who buys these trucks after the lease.





Just as a side note, when a truck runs out of fuel up here and dies, we use WD40 like starting fluid and get em running on that... yikes I would never do that to something I owned.

 

[Forrest Nearing]

wow! thanks for the responses!



well, I'm in the Dallas area... but I'm sorry, this would only be for me... can't really hook anyone else up.



the truck is a 91. 5 (12v)



so the consensus is:



yes, it'll work... will be down on power/mileage... no it won't cause any harm, but a little lube/additive couldn't hurt. ??? (I'm scared of hurting my baby)



hmm... just might have to see how far 140gal of this stuff will take me!



Forrest

 

[Champane Flight]

Aviation grade kerosene.

JetA or aviation grade kerosene is a little dry and has a tendecy to run hotter than #1 diesel. I would stick to #2 in your climate.

 

[Forrest Nearing]

hmm... interesting...



OK, I'll probably just pass on it then.



thanks!



Forrest

 

[Wheaties]

read your owners manual or the Dave Fritz website

If you own a 12V, you're probably good to go. If you have a 24V you really should read your owner's manual or the Dave Fritz website: http://www.dodgeram.org/tech/dsl/FAQ/diesel_fuel.htm#approved_fuels



Diesel #1 and #2 are the only fuels reccommended, though some other fuels may be used in a pinch if you add 5% lubricity. How much does an injection pump cost to replace if you burn it up?



It might work for a little while. It might even work for a long time. But I wouldn't do it.

Matt

 

[Woodenhead]

A buddy of mine put the last 200,000kms on his mid '80s VW Turbo Diesel Jetta burning Jet A. He never added any lubes to the fuel. The car ended puking the turbo with a little over 400,000kms on it. I can't see the turbo failure having anything to do with the Jet A and he never had pump problems. Burned it in his oil furnace too.



Just my $0. 02



Mike

 

[WDaniels]

aviation fuel

In reply to your query about using JP8 or Jet A. As someone who is around JP8 extensively(jet engine in the air guard) We have found that JP8 cokes and carbons up more than #1 or #2. When we converted from JP4(flash point of 192, flammable) to JP8(flash point 213? combustable) we found that most anything that we used the JP8 in it carboned up real bad and because JP8 has a higher flash point it doesn't light off as well. I wouldn't use it in my rig. Hope this helps.

 

[Alan Reagan]

If I remember right, the number designator in the JP indicates the mix of #1 (kerosene) to Naptha. JP4 is 4 parts fuel to 1 part Naptha. JP8 is 8 to 1. Naptha makes it "light off" faster and it does burn cleaner. The higher JP numbers are usually used by the Navy onboard carriers because they are a little less dangerous because it is hard to set them off. The Naptha helps with anti gelling at high altitudes. It'll burn allright, especially in the 12V. We used to use JP4 to "winter blend" our #2 back in the 70s.

 

[Timinator]

My information may be a little dated, but when I was "visiting" on the USS America, they told me they were using JP-5. The Navy guys didn't really like the JP-4 or JP-8 that the Navy guys got from our KC-135's because of the increased fire hazard. On the KC-135s that I flew on, we also carried JP-7 for "other" uses. The JP-7 would probably NEVER burn in a diesel engine.

 

[Doubleclutch]

JP4

It's no wonder the majority of guys that wore white hats didn't like JP4- the only time we used it was to clean parts! Say Tim- is that JP7 stuff the one with Boron in it? Sure hurts when you read the stories about the bird it was made for, and learn how it got goonied by politicians.

 

[Alan Reagan]

Not only do they not like JP4, gasoline is a four letter word to them. We were preparing to do some carrier qualifications for an unmanned aerial vehicle around 1995 and they were called off because of the gas engines on the plane. At that point we started designing what became known as the heavy fuel UAV which used twin diesel engines (push/pull configuration) so that the navy would use them.

 

[Jakebud]

JP-7

Timinator



Seems to me that you must have been at Beale AFB at one time on the KC-135Q model. Refueling the SR-71 perhaps? Active AF here, fly the E-4B at Offutt, used to fly the B-1. Always remember the change from JP-4 to JP-8. Lots of concern initially about cold wx starts with the JP-8. It has proven rather satisfactory since.



SPIKE

 

[LarryB]

Forrest

I think I would only run it if you have a P pump. Both the first gen and the toomanyvalve engines lube the pump with fuel. Lubricity may be a problem with them.



P-Pump Power! Don't you love it!





my -. 02

Larry

 

[Bill Lins]

LMAO!!!

Originally posted by LarryB

the toomanyvalve engines

I love it! That's a keeper! Somebody wake up Joe Donnelly!



(Would the GOOD ones be called "justenoughvalve engines"?)