Ford 2000 Expedition Manuel d'utilisateur télécharger pdf (Page 192)

• decreased engine coolant concentrations below 40% will

decrease the freeze protection characteristics of the engine

coolant and may cause engine damage.

• refer to the chart on the coolant container to ensure the

coolant concentration in your vehicle will provide adequate

protection at the temperatures in which you drive.

Vehicles driven year-round in non-extreme climates should use a 50/50

mixture of engine coolant and distilled water for optimum cooling system

and engine protection.

What you should know about fail-safe cooling

If the engine coolant supply is depleted, this feature allows the vehicle to

be driven temporarily before incremental component damage is incurred.

The “fail-safe” distance depends on ambient temperatures, vehicle load

and terrain.

How fail-safe cooling works

If the engine begins to overheat:

• the engine coolant temperature

gauge will move to the red (hot)

area.

• the symbol will illuminate.

• the

symbol will illuminate.

• the Service Engine Soon

indicator light will illuminate.

If the engine reaches a preset over-temperature condition, the engine

will automatically switch to alternating cylinder operation. Each disabled

cylinder acts as an air pump and cools the engine.

When this occurs the vehicle will still operate. However:

• the engine power will be limited.

• the air conditioning system will be disabled.

Continued operation will increase the engine temperature:

• the engine will completely shut down.

• steering and braking effort will increase.

Maintenance and care

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Ford 2000 Expedition Manuel d'utilisateur Page 192