Vehicle Loading; Gross Vehicle Weight Rating (Gvwr); Payload; Gross Axle Weight Rating (Gawr) - Dodge RAM 2500 2022 Owner's Manual

226 STARTING AND OPERATING
CAUTION!
Never add anything other than DEF to the tank

– especially any form of hydrocarbon such as
diesel fuel, fuel system additives, gasoline, or
any other petroleum-based product. Even a
very small amount of these, less than
100 parts per million or less than 1 oz. per
78 gallons (295 liters) will contaminate the
entire DEF system and will require replace-
ment. If owners use a container, funnel or
nozzle when refilling the tank, it should either
be new or one that has only been used for
adding DEF. Mopar® provides an attachable
nozzle with its DEF for this purpose.
Stop filling the DEF tank immediately if DEF
splashes or wells back in the filler neck.
Reinstall cap onto DEF filler tube.
Filling The Def Tank In Cold Climates
Since DEF will begin to freeze at 12°F (-11°C),
your vehicle is equipped with an automatic DEF
heating system. This allows the DEF injection
system to operate properly at temperatures below
12°F (-11°C). If your vehicle is not in operation for
an extended period of time with temperatures
below 12°F (-11°C), the DEF in the tank may
freeze. If the tank is overfilled and freezes, it could
be damaged. Therefore, do not overfill the DEF
tank.
Extra care should be taken when filling with
portable containers to avoid overfilling. Note the
level of the DEF gauge in your instrument cluster.
You may safely add a maximum of 2 gallons
(7.5 liters) of DEF from portable containers when
your DEF gauge is reading ½ full.

VEHICLE LOADING

G V W R
ROSS EHICLE EIGHT
(GVWR)
The GVWR is the total permissible weight of your
vehicle including driver, passengers, vehicle,
options and cargo. The label also specifies
maximum capacities of front and rear axle systems
(GAWR). Total load must be limited so GVWR and
front and rear GAWR are not exceeded.
P
AYLOAD
The payload of a vehicle is defined as the allowable
load weight a truck can carry, including the weight
of the driver, all passengers, options and cargo.
G A W R
ROSS XLE EIGHT ATING
The GAWR is the maximum permissible load on the
front and rear axles. The load must be distributed
in the cargo area so that the GAWR of each axle is
not exceeded.
Each axle GAWR is determined by the components
in the system with the lowest load carrying capacity
(axle, springs, tires or wheels). Heavier axles or
suspension components sometimes specified by
purchasers for increased durability does not
necessarily increase the vehicle's GVWR.
T S
IRE IZE
The tire size on the Vehicle Certification Label
ATING
represents the actual tire size on your vehicle.
Replacement tires must be equal to the load
capacity of this tire size.
R S
IM IZE
This is the rim size that is appropriate for the tire
size listed.
I
NFLATION
This is the cold tire inflation pressure for your
vehicle for all loading conditions up to full GAWR.
C W
URB EIGHT
The curb weight of a vehicle is defined as the total
(GAWR)
weight of the vehicle with all fluids, including
vehicle fuel, at full capacity conditions, and with no
occupants or cargo loaded into the vehicle. The
front and rear curb weight values are determined
by weighing your vehicle on a commercial scale
before any occupants or cargo are added.
P
RESSURE