How to perform a proper coolant flush - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 03-17-2010, 10:11 AM Thread Starter
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How to perform a proper coolant flush

Does anyone have a write up or instructions on how to perform a proper coolant flush after having to replace a faulty oil cooler? I am replacing my cooler and want to make sure i follow the proper procedures to prevent it from happening again. I am mainly looking to see what I need to disconnect to fully empty the system. I drained at the coolant tank pet**** last night but only got about 3 gallons out that way. Is there an easy way to fully drain all of the
coolant? The TSB for this states that you need to remove plugs from the heads as well as hoses from the heater core. The tsb also says to let the truck run at 1200 rpm for 1 hour to flush properly, how do I achieve this without having to sit in the vehicle for an hour.
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post #2 of 2 Old 03-18-2010, 06:36 AM
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Take it to the dealership. Between the cost of buying the coolant yourself, and disposing of old coolant, its just so much better to have someone else use a machine designed to do this job while you read Motor Trend magazine and drink a cup of coffee in the waiting room.

2004-6.0, SOLD
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