Engine Block Heater - If Equipped; Engine Break-In Recommendations - Jeep WRANGLER 2020 Owner's Manual

142 STARTING AND OPERATING
Idle the engine a few minutes before routine shutdown. After full load operation, idle the engine three to five minutes before shutting it down. This idle
period will allow the lubricating oil and coolant to carry excess heat away from the combustion chamber, bearings, internal components, and
turbocharger. This is especially important for turbocharged, charge air cooled engines.
Driving
Conditions
Stop & Go
Stop & Go
Highway Speeds
City Traffic
Highway Speeds
Uphill Grade
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and
permits quicker starts in cold weather. Connect
the cord to a standard 110-115 Volt AC
electrical outlet with a grounded, three-wire
extension cord.
The engine block heater must be plugged in at
least one hour to have an adequate warming
effect on the engine.
Turbocharger "Cool Down" Chart
Load
Empty
Medium
Medium
Max. GCWR
Max. GCWR
Max. GCWR
The engine block heater cord is found under the
hood bundled in front of the battery tray.
WARNING!
Remember to disconnect the engine block
heater cord before driving. Damage to the
110-115 Volt AC electrical cord could cause
electrocution.
Turbocharger
Temperature
Cool
Warm
Warm
Warm
Warm
Hot

ENGINE BREAK-IN RECOMMENDATIONS

A long break-in period is not required for the
engine and drivetrain (transmission and axle) in
your vehicle.
Drive moderately during the first 300 miles
(500 km). After the initial 60 miles (100 km),
speeds up to 50 or 55 mph (80 or 90 km/h) are
desirable.
Idle Time (In Minutes)
Before Shut Down
Less than 1
1
2
3
4
5