NOTE: FOR MOST SATISFACTORY ENGINE LIFE, USE ONLY THOSE NO. 2D DIESEL FUEL OILS
CONTAINING 0.50% OR LESS SULFUR. WHERE MINIMUM EXHAUST SMOKE IS REQUIRED OR
WHERE LONG PERIODS OF IDLING OR COLD WEATHER CONDITIONS BELOW 32F ARE
ENCOUNTERED, THE MORE VOLATILE OR LIGHT DISTILLATE FUELS ARE RECOMMENDED.
ASTM CLASSIFICATION OF DIESEL FUEL OILS
No. 1-0
-No. 2-D
Flash Pt.; F Min.
100
125
Carbon Residue; %
0.15
0.35
Water and Sediment; (% by Volume) Max.
Trace
0.10
Ash; % by Wt.; Max.
0.01
0.02
Distillation, F 90% Pt.; Max.
550
640
Min.
540
Viscosity at 100F;centistokes Min.
1.4
2.0
Max.
2.5
4.3
Sulfur; % Max.
0.5
0.7
Cetane No.; Min.
40
40
Engine operation at altitudes above 5,000 feet requires use of next lighter class of fuel oil than would normally be used.
During cold weather engine operation, the "cloud point" (the temperature at which wax crystals begin to form in the fuel oil)
should be 10F below the lowest expected fuel temperature to prevent clogging of the fuel filters by wax crystals.
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