TM 9-6115-666-13
2.3.3 Engine Oil.
CAUTION
KHD warranty for the diesel engine will be void if oils listed in table 2-5 are not used.
2.3.3.1 Oil Quality.
As an internal combustion engine operates, some of the engine oil used to lubricate the cylinders is also
burned. Temperature stress and fuel combustion products entering the oil also cause deterioration of the
oil, especially its chemical additives, As a result all of the oil must periodically be replaced with fresh oil.
The oil manufacturer provides the only guarantee of the quality grade to which an oil belongs. Oil quality
is partly defined by API classes: CC/SE or CD/SE 1) (paragraph 2.3.3.3).
If the only quality information available is from MIL-specifications, proceed as follows:
MIL-L-2104C, added at the same time as MIL-L-46125A, corresponds to API: CD/SE.
SHPD oils 2, (paragraph 2.3.3.3) are approved individually by the engine manufacturer.
Table 2-5 SHPD Oils Approved for Diesel Engine BF8L513.
Oil Company
Brand of Oil
Agip
Sigma Turbo
Caltex
RPM DELO 450 Oil
Chevron
Chevron Delo 450 Motor Oil Multigrade
Esso
DIESEL MOTOR OIL 500
Gulf
Gulf Turbo Diesel
Valvoline
Valvoline Super HDS LD
Veedol
Veedol Turbostar
2.3.3.2 Oil Viscosity.
Because the viscosity of an oil changes with temperature, the ambient temperature at the operating loca-
tion of the diesel engine is a critical factor in selecting the viscosity class (SAE class) (figure 2-9).
If SAE 15W-40 is used, occasional temperatures slightly lower than the limit (e.g. down to 5 °F (-15° C))
may impair cold-starting ability but will not cause engine damage
Excessively viscous oil leads to difficulties in starting, which is why temperature during engine starting is
the essential factor in selecting a viscosity for winter operation. The use of multigrade oils eliminates the
need for temperature-related oil changes. Multigrade oils are subject to the same oil change intervals as
single-grade oils.
2 - 4 1
