FUEL REQUIREMENTS; 3.6L Engine; Reformulated Gasoline- Page 434

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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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

3.6L Engine

This engine is designed to meet all emis-

sions regulations and provide excellent

fuel economy and performance when

using high-quality unleaded “Regular”

gasoline having an octane rating of 87 as

specified by the (R+M)/2 method. The

use of higher octane “Premium” gaso-

line will not provide any benefit over “Regular” gasoline in

these engines.
While operating on gasoline with an octane number of 87,

hearing a light knocking sound from the engine is not a

cause for concern. However, if the engine is heard making

a heavy knocking sound, see your dealer immediately. Use

of gasoline with an octane number lower than 87 can cause

engine failure and may void or not be covered by the New

Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as hard

starting, stalling, and hesitations. If you experience these

symptoms, try another brand of gasoline before consider-

ing service for the vehicle.

Reformulated Gasoline

Many areas of the country require the use of cleaner

burning gasoline referred to as “Reformulated Gasoline”.

Reformulated gasoline contains oxygenates and are specifi-

cally blended to reduce vehicle emissions and improve air

quality.
The use of reformulated gasoline is recommended. Prop-

erly blended reformulated gasoline will provide improved

performance and durability of engine and fuel system

components.

432

TECHNICAL SPECIFICATIONS

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 434

  • 3.6L Engine This engine is designed to meet all emis- sions regulations and provide excellent fuel economy and performance when using high-quality unleaded “Regular” gasoline having an octane rating of 87 as specified by the (R+M)/2 method.

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