7l engine — if equipped, Reformulated gasoline – Dodge 2015 Durango - Owner Manual User Manual

Page 509

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from operating with a heavy spark knock may void or

not be covered by the New Vehicle Warranty.

5.7L Engine — If Equipped

This engine is designed to meet all emis-

sions regulations and provide satisfactory

fuel economy and performance when us-

ing high-quality unleaded gasoline having

an octane range of 87 to 89. Use of 89

octane for optimum performance is recommended. The

use of premium gasoline is not recommended, as it will

not provide any benefit over plus 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. Engine damage resulting from operating with a

heavy spark knock may void or not be covered by the

new vehicle 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 consid-

ering 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 contain oxygenates and are spe-

cifically blended to reduce vehicle emissions and im-

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

erly blended reformulated gasoline will provide im-

proved performance and durability of engine and fuel

system components.

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STARTING AND OPERATING 507

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