[Vwdiesel] ULSD Typical Spec (fwd)

[Val Christian]

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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