Jeep Grand Cherokee 2017 Manual page 72

70 TECHNICAL SPECIFICATIONS
FUEL REQUIREMENTS
Federal law requires that you must fuel this vehicle with
Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low Sulfur Highway
Diesel fuel (500 ppm Sulfur maximum) to avoid damage to
the emissions control system.
Use good quality diesel fuel from a reputable supplier in
your vehicle. For most year-round service, No. 2 diesel fuel
meeting ASTM (formerly known as the American Society
for Testing and Materials) specification D-975 Grade S15
will provide good performance. If the vehicle is exposed to
extreme cold (below 20°F or -7°C), or is required to operate
at colder-than-normal conditions for prolonged periods,
use climatized No. 2 diesel fuel or dilute the No. 2 diesel
fuel with 50% No. 1 diesel fuel. This will provide better
protection from fuel gelling or wax-plugging of the fuel
filters.
WARNING!
Do not use alcohol or gasoline as a fuel blending agent.
They can be unstable under certain conditions and
hazardous or explosive when mixed with diesel fuel.
Diesel fuel is seldom completely free of water. To prevent
fuel system trouble, drain the accumulated water from the
fuel/water separator using the fuel/water separator drain
provided on the fuel filter housing. If you buy good quality
fuel and follow the cold weather advice above, fuel condi-
tioners should not be required in your vehicle. If available
in your area, a high cetane "premium" diesel fuel may offer
improved cold-starting and warm-up performance.
CAUTION!
If the "Water in Fuel Indicator Light" remains on, DO
NOT START engine before you drain the water from
the fuel filter(s) to avoid engine damage. Refer to
"Draining Fuel/Water Separator Filter" in "Servicing
And Maintenance" for further information.
Diesel Fuel Specifications
This diesel engine has been developed to take advantage of
the high energy content and generally lower cost No. 2
Ultra Low Sulfur diesel fuel or No. 2 Ultra Low Sulfur
climatized diesel fuels.