Full synthetic oils, such as Mobilt 1 0W-40, is
required if the ASSYST Oil Service Reminder is fol-
lowed. Use of a lower quality oil on this service
schedule may cause severe engine damage.
DESCRIPTION - AUTOMATIC TRANSMISSION
FLUID - NAG1
NOTE: Refer to Service Procedures in this group for
fluid level checking procedures.
Shellt 3403 Automatic Transmission Fluid is the
recommended fluid for the NAG1 DaimlerChrysler
automatic transmission.
Dexron II fluid IS NOT recommended. Clutch
chatter can result from the use of improper
fluid.
Mopart ATF+4, Automatic Transmission Fluid, or
other fluids meeting MS-9602, may be used if Shellt
3403 Automatic Transmission Fluid is not available.
Shellt 3403 Automatic Transmission Fluid when
new is red in color. The ATF is dyed red so it can be
identified from other fluids used in the vehicle such
as engine oil or antifreeze. The red color is not per-
manent and is not an indicator of fluid condition. As
the vehicle is driven, the ATF will begin to look
darker in color and may eventually become brown.
This is normal.
FLUID ADDITIVES
DaimlerChrysler strongly recommends against the
addition of any fluids to the transmission, other than
those automatic transmission fluids listed above.
Exceptions to this policy are the use of special dyes
to aid in detecting fluid leaks.
Various “special” additives and supplements exist
that claim to improve shift feel and/or quality. These
additives and others also claim to improve converter
clutch operation and inhibit overheating, oxidation,
varnish, and sludge. These claims have not been sup-
ported to the satisfaction of DaimlerChrysler and
these additives must not be used. The use of trans-
mission “sealers” should also be avoided, since they
may adversely affect the integrity of transmission
seals.
OPERATION - AUTOMATIC TRANSMISSION
FLUID
The automatic transmission fluid is selected based
upon several qualities. The fluid must provide a high
level of protection for the internal components by
providing a lubricating film between adjacent metal
components. The fluid must also be thermally stable
so that it can maintain a consistent viscosity through
a large temperature range. If the viscosity stays con-
stant through the temperature range of operation,
transmission operation and shift feel will remain con-
sistent. Transmission fluid must also be a good con-
ductor of heat. The fluid must absorb heat from the
internal transmission components and transfer that
heat to the transmission case.
FLUID CAPACITIES
SPECIFICATIONS - FLUID CAPACITIES
DESCRIPTION SPECIFICATION
ENGINE COOLANT
10 Liters 10.5 Quarts
ENGINE OIL
9.0L with Filter
Replacement
9.5 Quarts with Filter
Replacement
AUTOMATIC TRANSMISSION
Service Fill - NAG1 5.0 L (10.6 pts.)
O-haul Fill - NAG1 7.7 L (16.3 pts.)
Dry fill capacity Depending on type and size of
internal cooler, length and inside diameter of cooler
lines, or use of an auxiliary cooler, these figures may
vary. (Refer to appropriate 21 - TRANSMISSION/
AUTOMATIC/FLUID - STANDARD PROCEDURE).
REAR AXLE ± .03L (1 oz.)
8 1/2 1.8 L (4.0 pts.)
FUEL TANK
Primary 100 L (26.4 gal.)*
Reserve 10.5 L (2.8 gal.)*
*Nominal refill capacities are shown. A variation may
be observed from vehicle to vehicle due to
manufacturing tolerance and refill procedure
POWER STEERING SYSTEM
Power steering fluid capacities are dependent on
engine/chassis options as well as steering gear/cooler
options. Depending on type and size of internal
cooler, length and inside diameter of cooler lines, or
use of an auxiliary cooler, these capacities may vary.
Refer to 19, Steering for proper fill and bleed
procedures.
FLUID FILL/CHECK
LOCATIONS
INSPECTION - FLUID FILL/CHECK LOCATIONS
The fluid fill/check locations and lubrication points
are located in each applicable group.
0 - 4 LUBRICATION & MAINTENANCE VA
FLUID TYPES (Continued)
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