TM 3-1040-276-10
2-9. OPERATION IN UNUSUAL WEATHER.
oil supplies.
a. Effects of Unusual Weather on Operations.
(3) Keep gas and kerosine caps securely
tightened on cans when not in use.
(1) Rain, mud, dust, sleet, snow, and ice
can clog parts and contaminate fuel or fog oil
(4) Keep fuel tank cap securely tightened
supplies.
on fuel tank except when fueling.
(2) In hot weather, gasoline evaporates
quickly when gas can caps and the fuel tank cap
(5) Fill fuel tank as often as possible.
are not secured tightly.
(6) Keep bungs securely tightened on fog
oil drums when not in use.
(3) In freezing weather (below 32F (0C)
fog oil becomes thick and flows slowly.
(7) Check for ice crystals in fuel or fog oil.
(4) Below 25F (-4C) ice crystals form in
d. Cold Weather Fog Oil Mixtures. For
fuel, fog oil, or air pressure hoses. These ice crystals
operation in freezing weather, fog oil (item 2, app D)
gather in strainers, in elbows, and in valves and
and kerosine (item 4, app D) can be blended to form
stop flow of fuel, fog oil, or air. Disassembling and
mixtures that flow easier. The following table lists
clearing clogged lines, elbows, and valves takes
percentages of fog oil-fuel mixtures recommended
time.
for operation in freezing weather. Notify fuel supply
personnel if your generator requires these mixtures.
(5) Below 0F (-18C) starting becomes
Fuel supply personnel are responsible for mixing
difficult.
and supplying these mixtures.
NOTE
c. Servicing in Unusual Weather.
KNOW YOUR SMOKE GENERATOR.
Some can operate at low temperatures
(1) Clean mud, snow, and ice from smoke
with fog oil alone.
FOG OIL - FUEL MIXTURES
Operating Temperatures
Percentage by Volume
Fahrenheit (F)
Celsius (C)
Fog Oil
Kerosine
75
32 to 0oF
25
0 to -18C
60
40
0 to -25F
-18 to -31C
50
50
-25 to -40F
-31 to 40C
Change 1
2-21