[Vwdiesel] ULSD Typical Spec (fwd)

[Terry Briggs]

Now, I just have not had that issue, We had a solid week of temps below  
10 degrees, and the golf started every time, no sputtering, not even a  
whimper, it's kept outside all the time, so being in a warm{er} garage  
isn't a factor.
On Feb 9, 2007, at 6:24 PM, Val Christian wrote:

> Forwarded message:
>> From: Val Christian <val at mongobird.com>
>> Subject: ULSD Typical Spec
>> Date: Tue, 6 Feb 2007 15:13:10 -0500 (EST)
>>
>> OK, local drivers and mechanics are saying the ULSD doesn't work for  
>> them
>> with this week's WX (-20C, 0F) type temperatures.
>>
>> Some mail list people have stated that ULSD has a depressed pour  
>> point.
>>
>> I looked at the .mil presentations on ULSD and they specifically  
>> complain
>> about poor pour points, poor cloud points, and seal failures.  They  
>> also
>> say that there is effectively very little or no ULSD No 1 fuel  
>> (kerosine)
>> to blend with the ULSD #2.
>>
>> I found a spec, pdf attached, that claims that a typical cloud point  
>> is 14F,
>> and a pour point of 0F, without additives.  If that is really  
>> typical, no
>> wonder we are having problems.  At -10F, it's a wonder we can suck
>> jello out of the fuel tank!
>>
>> Seems like there's trouble in River City.  My guess is that this  
>> winter will
>> be cause for reblending, and possibly cause for ULSD #1.  Technical  
>> press
>> articles claim that the parafin in ULSD is such that it is long  
>> chains, and
>> will precipitate out at much higher temperatures.  +14F would fit my
>> concept of a higher temperature.
>>
>> Val
>
>
> Here's the txt extract of the pdf I foolishly attempted to forward:
>
>
> TYPICAL SPECIFICATIONS FOR ULSD
>
> DIESEL FUEL ULSD
>
> PHYSICAL PROPERTIES TYPICAL ANALYSIS
> API GRAVITY 30
> LBS./ GALLON 7.0
> FLASH POINT, F. 150
> DISTILLATION, F.
> INITIAL BOILING POINT 365
> 50 % RECOVERY 500
> 90 % RECOVERY 540-640
> END POINT 650
> POUR POINT, F. 0
> CLOUD POINT, F. 14
> CFPP, F. 12
> VISCOSITY @ 40 C., CST 2.5
> SULFUR, % WT. <0.04 (400ppm) <0.0015 (15ppm)
> CETANE INDEX NUMBER 40
> COLOR RED or UNDYED
> WATER & SEDIMENT NIL
> COPPER STRIP CORROSION @ 122 F. 1A
> ASH, % WT. NIL
>
> NOTE #1: Values listed above represent typical properties. These  
> values may vary between terminal locations.
>
> NOTE #2: ULSD FUEL has lubricity requirement of <520um wear scar per  
> HFRR (High Frequency Recipricating
> Rig) test
> _______________________________________________________________________ 
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