Jeep Gladiator 2021, Owner'S Manual, Page: 398 / 484

396 SERVICING AND MAINTENANCE
E
NGINE
O
IL
Engine Oil Selection — Gasoline Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer only recommends engine oils
that are API Certified and meet the
requirements of the manufacturer Material
Standard MS-6395.
Engine Oil Selection — Diesel Engine
For best performance and maximum protection
under all types of operating conditions, the
manufacturer recommends engine oils that
meet the requirements of the manufacturer
Material Standard MS-12991, and that are API
SN certified and meet the requirements of the
manufacturer.
American Petroleum Institute (API) Engine
Oil Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends API
Certified engine oils.
This symbol certifies 0W-20, 5W-20, 0W-30,
5W-30 and 10W-30 engine oils.
Synthetic Engine Oils
You may use synthetic engine oils provided the
recommended oil quality requirements are met,
and the recommended maintenance intervals
for oil and filter changes are followed.
Synthetic engine oils which do not have both the
engine oil certification mark and the correct SAE
viscosity grade number should not be used.
Materials Added To Engine Oil
The manufacturer strongly recommends
against the addition of any additives (other than
leak detection dyes) to the engine oil. Engine oil
is an engineered product and its performance
may be impaired by supplemental additives.
Disposing Of Used Engine Oil And Oil
Filters
Care should be taken in disposing of used
engine oil and oil filters from your vehicle. Used
oil and oil filters, indiscriminately discarded, can
present a problem to the environment. Contact
an authorized dealer, service station, or
governmental agency for advice on how and
where used oil and oil filters can be safely
discarded in your area.
E
NGINE
O
IL
F
ILTER
The engine oil filter should be replaced with a
new filter at every engine oil change.
Engine Oil Filter Selection
A full-flow type disposable oil filter should be
used for replacement. The quality of
replacement filters varies considerably. Only
high quality Mopar® filters should be used.
E
NGINE
A
IR
C
LEANER
F
ILTER
For the proper maintenance intervals see
Ú
page 384 for gas engines or
Ú
page 389 for
diesel engines.
NOTE:
Be sure to follow the “Severe Duty Conditions”
maintenance interval if applicable.
CAUTION!
Do not use chemical flushes in your engine oil
as the chemicals can damage your engine.
Such damage is not covered by the New Vehi -
cle Limited Warranty.