Fuel Requirements - Diesel Engines; Adding Fuel; Locking Fuel Filler Cap (Gas Cap) - Jeep Wrangler Owner's Manual

FUEL REQUIREMENTS — DIESEL
ENGINES
Use Premium Quality Diesel fuels with a Cetane
rating of 50 or higher, and meeting the EN590
standard are highly recommended. See your
authorized dealer for further information re-
garding fuels available in your area.

ADDING FUEL

Locking Fuel Filler Cap (Gas Cap)

The locking gas cap is located on the driver's
side of the vehicle. If the gas cap is lost or
damaged, be sure the replacement cap is the
correct one for this vehicle.
Fuel Filler Cap
226
1. Turn off engine.
2. Insert the ignition key into the fuel cap and
turn the key one-quarter turn to the right, then
rotate the fuel cap to the left to remove.
3. Rotate the ignition key back to the left to
remove.
4. To replace the cap, insert it into the filler
neck and tighten to the right until at least three
clicks are heard.
CAUTION!
• Damage to the fuel system or emissions
control system could result from using an
improper fuel tank filler tube cap (gas cap).
• A poorly fitting gas cap could let impurities
into the fuel system.
• A poorly fitting gas cap may cause the
Malfunction Indicator Light (MIL) to turn on.
• To avoid fuel spillage and overfilling, do not
"top off" the fuel tank after filling. When the
fuel nozzle "clicks" or shuts off, the fuel tank
is full.
WARNING!
• Remove the fuel tank filler tube cap (gas
cap) slowly to prevent fuel spray from the
filler neck, which may cause injury.
• The volatility of some gasolines may cause
a buildup of pressure in the fuel tank that
may increase while you drive. This pres-
sure can result in a spray of gasoline and/or
vapors when the cap is removed from a hot
vehicle. Removing the cap slowly allows
the pressure to vent and prevents fuel
spray.
• Never have any smoking materials lit in or
near the vehicle when the gas cap is re-
moved or the tank is being filled.
• Never add fuel to the vehicle when the
engine is running.
• A fire may result if gasoline is pumped into
a portable container that is inside of a
vehicle. You could be burned. Always place
gas containers on the ground while filling.