Cetane specs for Aussie fuel....

[tdi-rick]

I thought this would be more relevant in here, or at least more likely to be seen.

I can't find any specs on Mobil diesel. Interesting that a number of operators have said to me they felt their trucks go better on BP vs Caltex when you look at the cetane rating points.

I don't know if this first one is still relevant, as I thought all the majors had moved to 50ppm, although they aren't required to for another six months....

Caltex low sulphur
KEY PROPERTIES
Sulfur, mg/kg 500 max
Flash Point °C 61.5 min
Density at 15°C, kg/L 0.820 - 0.860
Cetane index 46 min
Code 416
Lubricity, mm 0.460 max

Caltex Ultra Low Sulphur
KEY PROPERTIES
Sulfur, mg/kg 50 max
Flash Point °C 61.5 min
Density at 15°C, kg/L 0.820 - 0.860
Cetane index 46 min
Code
420
Lubricity, mm
0.460 max

BP Ultra Low Sulphur
Typical Values — based on BP Laboratory testing

Value
Typical Specification
Density kg/L at 15 deg C 0.835 0.83 - 0.85
Distillation 95% recovered deg.C 340 350 max
Viscosity at 40 deg C 3.0 2.0 - 4.5
Water % vol less than 0.02 0.02 max
Sediment % mass less than 0.01 0.01 max
Cetane 51
Sulphur mg/kg 50 max
lubricity 300 - 400 460 max


Shell Ultra Low Sulphur

DESCRIPTION UNITS METHODS TYPICAL
Density @15oC kg/L D1298/D4052 0.850
Viscosity @40 oC mm2/s D445 3.05
Flash Point oC D93 79
Sulphur mg/kg D2622/D5453 45
Cetane Index - D4737 49
Distillation - 95% oC D86 340
Water % volume D95 0.05
Ash % mass D482 0.01
Sediment % mass D473 0.01
Filterability Test % mass D2068 1.05
Strong Acid Number mg KOH/g D974 Nil
Total Acid Number mg KOH/g D664 0.1
Copper Corrosion - D130 1a
Lubricity (HFRR test) Microns IP 450 400

 

[haley10]

Around here Ford PSD owners seem to do best on BP.

I sure wish cetane ratings had to be posted like octane ratings do. Unfortunately it remains a mystery every time you fill up. Especially in the Southeastern U.S. our regular gasoline is pretty high sulphur content.