Cold Weather Recommendations for On-Highway Diesel Truck Engines Caterpillar

Cold Weather Recommendation Charts

Usage:

3208 02Z

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If equipped with an air inlet heater (AIH) for cold weather starting, do not use types of starting aids such as ether. Such use could result in an explosion and injury.

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NOTICE

When starting the engine with ether, follow these starting procedure instructions carefully. Use ether sparingly and spray it ONLY WHILE CRANKING THE ENGINE. Excessive ether use can cause piston and ring damage. Ether should be used only for cold weather starting.

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Table 1
Medium and Heavy-Duty On-Highway Engines ⁽¹⁾ Cold Weather Recommendations
Starting Aids
Expected Coldest Temperature	Ether Injection ⁽²⁾ OR Air Inlet Heater	Cylinder Block Coolant Heater	Larger Battery Larger Alternator
Above −7 °C (19 °F)	Available	Available	Available
−7 °C (19 °F) to −18 °C (0 °F)	Available	Available	Available
−18 °C (0 °F) to −28 °C (−18 °F)	Recommended	Required	Recommended
−28 °C (−18 °F) to −40 °C (−40 °F)	Recommended	Required	Required
Less than −40 °C (−40 °F)	Required	Required	Required

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^( 1 )	Options may not be available for all models.
^( 2 )	If the engine is equipped with an air inlet heater (AIH) for cold weather starting, do not use types of starting aids such as ether. Such use could result in an explosion and injury.

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Table 2
Medium and Heavy-Duty On-Highway Engines ⁽¹⁾ Cold Weather Recommendations
Improvements for Engine Warm-Up Improvements for Idle Temperature
Expected Coldest Temperature	Hand Throttles	Winter Fronts Shutters	Air Cleaners Located Under the Hood	On/Off Fan Drives	BrakeSavers Exhaust Restrictors
Above −7 °C (19 °F)	Available	Available	Available	Available	Available
−7 °C (19 °F) to −18 °C (0 °F)	Available	Recommended	Recommended	Recommended	Available
−18 °C (0 °F) to −28 °C (−18 °F)	Recommended	Required	Recommended	Required	Recommended
−28 °C (−18 °F) to −40 °C (−40 °F)	Required	Required	Recommended	Required	Recommended
Less than −40 °C (−40 °F)	Required	Required	Recommended	Required	Required