Guidelines for Coolant For Detroit 71 Series Inline Engines (271, 371, 471, 671)

October 31, 2024

Everything You Need To Know About Coolant For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


1. Types of Coolant For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


2. Considerations for High-Temperature and Freezing Conditions For Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Chemicals & Coolant For Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Importance of Using Demineralized or Distilled Water

Impacts of High Sulfate or Hard Water on the Heat Exchanger and Radiator

Methods to Mitigate the Effects of High Sulfate or Hard Water

Filling and Bleeding the Cooling System For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)


1. Coolant Filling Procedure

2. Bleeding the System

3. Importance of Regular Coolant Level Checks

        Routine Cooling System Checks and Maintenance For Detroit Diesel 71 Series Inline Engines (271, 371, 471, 671)



1. Checking Coolant Levels

2. Inspecting Hoses and Connections

3. Coolant Quality and Replacement Interval

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Maintaining The Heat Exchanger Core For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)

October 31, 2024

Heat Exchanger Core Cleaning For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


Step-by-Step Instructions for Cleaning the Heat Exchanger Core


Recommended Frequency of Cleaning


Pressure Testing the Core for Leaks


Preparation for Pressure Testing:


Apply Air Pressure:


Diagnose and Repair Leaks:


Corrosion Prevention in Saltwater Environments


Best Practices for Preventing Corrosion


Importance of Repairing or Replacing the Core if Leaks or Corrosion are Detected


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Maintaining The Heat Exchanger Core For Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)

Considerations for High-Temperature and Freezing Conditions for Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)

October 31, 2024

Considerations for High-Temperature and Freezing Conditions for Your Detroit Diesel 71 Series Inline Engine (271, 371, 471, 671)


High-Temperature Environments


Increased Boil-Over Protection:


Corrosion Inhibitors for High Loads:


Consider Extended-Life Coolants (ELCs):


Cold and Freezing Conditions


Enhanced Freeze Protection:


Antifreeze Additives:


Engine Warm-Up Considerations:


Choosing the Right Coolant for Extreme Climates


High-Temperature Applications:


Cold and Freezing Applications:


Additional Maintenance Practices for Extreme Conditions


Coolant Condition Monitoring:


Periodic Coolant Replacement:


Inspecting Cooling System Components:


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