
116
Maintenance Section (D6T LGP (OEM)) WEBM1000
Lubricant Viscosities and Refill Capacities
Where recommended for use, Cat FDAO SYN Cat
FDAO or commercial oil that meets Cat FD-1 are the
preferred oil types to maximize gear and bearing
life. Do not use Cat FDAO, Cat FDAO SYN, or Cat
FD-1 in compartments containing clutches and/or
brakes. Cat TDTO, Cat TDTO-TMS, or commercial
oil that meets Cat TO-4 oil types must be used in
any compartment containing friction material unless
specified otherwise by Caterpillar.
For the Final Drives in severe usage or in continuous
o
peration
s, WARM-UP is required. Exercise the final
drives for several minutes with the engine at a partial
throttle in order to warm up the oil prior to production
operation
Table 20
Lubricant Viscosities for Ambient Temperatures
Compartment or
System
Applicatio
n
Oil Type and
Classification
Oil Viscosities
C F
Min Max Min Max
Final Drive
Moderate Usage or
Intermitte
nt
Operation
Cat FDAO
commercial FD-1
Cat TDTO COLD
WEATHER
Cat TDTO
Cat TDTO-TMS
commercial TO-4
SAE 60 7 50 19 122
SAE 50 15 32 5 90
SAE 30 25 15 13 59
Cat TDTO-TMS 35 15 31 59
Severe Usage or
Continu
ous
Operation (Multiple
Shifts/Day)
Cat FDAO
commercial FD-1
Cat TDTO COLD
WEATHER
Cat TDTO
Cat TDTO-TMS
commercial TO-4
SAE 60 25 50 13 122
SAE 50 33 14 27 58
SAE 30 40 0 40 32
Cat TDTO-TMS 40 0 40 32
Special Applications
Cat Synthetic GO is an SAE 75W-140 viscosity
grade oil.