Fuel Requirements; L Engine - Jeep GRAND CHEROKEE 2023 Owner's Manual

356 TECHNICAL SPECIFICATIONS
Inspect the wheel mounting surface prior to mounting the
tire and remove any corrosion or loose particles.
Wheel Mounting Surface
Tighten the lug nuts/bolts in a star pattern until each nut/
bolt has been tightened twice. Ensure that the socket is
fully engaged on the lug nut/bolt (do not insert it half way).
NOTE:
If in doubt about the correct tightness, have them checked
with a torque wrench by an authorized dealer or service
station.
After 25 miles (40 km), check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly tightened.
Torque Patterns
WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts/bolts fully until the vehicle has
been lowered. Failure to follow this warning may result
in personal injury.

FUEL REQUIREMENTS

Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage, and immediate service is
required.
Besides using unleaded gasoline with the proper octane
rating, gasolines that contain detergents, corrosion and
stability additives are recommended. Using gasolines that
have these additives may help improve fuel economy,
reduce emissions, and maintain vehicle performance.
Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of gasoline before
considering service for the vehicle.
2.0L E
NGINE
This engine is designed to meet all emissions regulations,
and provide satisfactory fuel economy and performance
when using high-quality unleaded gasoline with a
recommended RON of 95.