Engine Oil Temperature Gauge
NOTICE
A sudden increase in oil temperature that is not
caused by a load increase may indicate mechani-
cal failure. Bring the vehicle to a safe stop and
investigate the cause to prevent further damage.
Do not operate the engine until the cause has
been determined and corrected.
During normal operation, the optional engine oil tem-
perature gauge (
) should read in the follow-
ing temperature ranges:
•
160 to 195°F (71 to 91°C) for Caterpillar en-
gines
•
200 to 260°F (93 to 126°C) for Detroit and
Cummins engines
•
177 to 203°F (81 to 95°C) for Mercedes-Benz
engines
Under heavy loads, such as when climbing steep
grades, temperatures that exceed the normal oil tem-
perature range for a short period are not unusual. If
the temperature returns to normal when the load de-
creases, there is no problem.
Fuel Gauge, Pre-EPA10
The fuel gauge indicates the level of fuel in the fuel
tank(s). A single fuel gauge is standard. If equipped
with an optional second fuel tank, each fuel tank
level is indicated on a separate gauge. See
Fuel/Diesel Exhaust Fluid (DEF)
Gauge, EPA10 and Newer
For engines that are EPA10-compliant or newer, the
fuel and DEF levels are measured in a dual purpose
fuel/DEF level gauge. See
The diesel fuel level is indicated at the top of the
gauge, with a low-fuel warning lamp that illuminates
when the diesel fuel level registers 1/8th of capacity.
The DEF level is indicated in the lightbar on the
lower portion of the gauge. There is a low DEF level
warning lamp that illuminates amber when the DEF
level reaches 10% of capacity. See
for
details of the DEF gauge functions.
10/10/2001
f610569
Fig. 3.11, Engine Oil Temperature Gauge
10/09/2001
f610566
E
F
1/2
FUEL
Fig. 3.12, Fuel Level Gauge, Pre-EPA10
08/21/2009
1/2
ULTRA LOW SULFUR
DIESEL FUEL ONLY
E
F
DEF
F
E
f611045
1
2
3
4
1.
Diesel Fuel Level Indicator
2.
DEF Level Indicator
3.
Low DEF Warning Lamp (amber below 10% DEF)
4.
Low Fuel Warning Lamp (amber at 1/8 tank of fuel)
Fig. 3.13, Fuel/DEF Gauge, EPA10
Instruments
3.12
