Dodge RAM 1500 2018 Diesel Supplement page 197

WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be grass or
leaves coming into contact with your exhaust system. Do
not park or operate your vehicle in areas where your
exhaust system can contact anything that can burn.
Diesel Exhaust Fluid
Diesel Exhaust Fluid (DEF) sometimes known simply by
the name of its active component, UREA—is a key compo-
nent of selective catalytic reduction (SCR) systems, which
help diesel vehicles meet stringent emission regulations.
DEF is a liquid reducing agent that reacts with engine
exhaust in the presence of a catalyst to convert smog-
forming nitrogen oxides (NOx) into harmless nitrogen and
water vapor.
Refer to "Fluids And Lubricants" in "Technical Specifica-
tion" for further information.
You can receive assistance in locating DEF in the United
States by calling 866-RAM-INFO (866-726-4636). In Canada
call 1–800–465–2001 (English) or 1–800–387–9983 (French)
SERVICING AND MAINTENANCE 195
Maintenance-Free Batteries
The top of the maintenance-free batteries are permanently
sealed. You will never have to add water, nor is periodic
maintenance required.
NOTE: Replacement batteries should both be of equal ca-
pacity to prevent damage to the vehicle's charging system.
CAUTION!
It is essential when replacing the cables on the battery
that the positive cable is attached to the positive post
and the negative cable is attached to the negative post.
Battery posts are marked (+) positive and negative (-)
and are identified on the battery case. Also, if a "fast
charger" is used while the battery is in vehicle, discon-
nect both vehicle battery cables before connecting the
charger to the battery. Do not use a "fast charger" to
provide starting voltage.
WARNING!
Battery posts, terminals, and related accessories con-
tain lead and lead compounds. Always wash hands
after handling the battery.
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