Fuel Requirements
All engines are designed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality unleaded “regular” gasoline having an octane rating of 87. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines.
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. 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.
Over 40 auto manufacturers worldwide have issued and endorsed consistent gasoline specifications (the Worldwide Fuel Charter, WWFC) which define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recommends the use of gasoline that meets the WWFC specifications if they are available.
See also:
If You Stall Or Begin To Lose Headway
If you stall or begin to lose headway while climbing a steep hill, allow your
vehicle to come to a stop and immediately apply the brake. Restart the engine and
shift into REVERSE. Back slowly down ...
Recreational Towing — Two-Wheel Drive Models
Recreational towing is allowed ONLY if the rear wheels
are OFF the ground. This may be accomplished using a
tow dolly or vehicle trailer. If using a tow dolly, follow
this procedure:
1. Properl ...
Ride Comfort
The Grand Cherokee's ride comfort is its most impressive quality. The new
four-wheel independent suspension soaks up bumps easily without getting
flustered like a traditional SUV can, and it corne ...