Coolant flush and coolant filter install - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 04-24-2011, 07:46 AM Thread Starter
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Coolant flush and coolant filter install

I am planning on doing the coolant flush in the fairly near future. I would like to add a coolant filter, too. My question is, would it be helpful (or wise) to install the filter before doing the flush? I was thinking that running the filter for a few weeks, keep changing it as necessary, would help with the flush when I get around to it. Or would that just be a waste of several filters?

On a related note, I am thinking of changing the oil cooler at the same time. Should I flush before changing the cooler? It would seem to be a waste of time to flush after changing it, all the crud would just re-settle in there, right?

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post #2 of 11 Old 04-24-2011, 08:03 AM
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Flush before adding the filter and before replacing oil cooler.

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post #3 of 11 Old 04-24-2011, 08:16 AM
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Yup. Do your flush first, then change the cooler add the filter and fill'er up with coolant.
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post #4 of 11 Old 04-24-2011, 08:32 AM
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Do you need an oil cooler? I did my flush yesterday and then did my filter.

All the flushes took about 5 hours (even with pulling the stat). The coolant filter took about 15 minutes.

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post #5 of 11 Old 04-24-2011, 08:52 AM Thread Starter
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Quote:
Originally Posted by Galaxie View Post
Do you need an oil cooler? I did my flush yesterday and then did my filter.

All the flushes took about 5 hours (even with pulling the stat). The coolant filter took about 15 minutes.
Not sure. According to my Scangauge, the cooler seems to be ok, now. I am going to do the coolant flush/filter first and see how things go. I hope the cooler is ok after the flushing, keeping fingers crossed!

'06, XLT, F350 FX4, Auto, Ext. Cab Short bed
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post #6 of 11 Old 04-24-2011, 09:10 AM
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Originally Posted by beemerbiker5 View Post
Not sure. According to my Scangauge, the cooler seems to be ok, now. I am going to do the coolant flush/filter first and see how things go. I hope the cooler is ok after the flushing, keeping fingers crossed!
What are your temps now, before flushing?
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post #7 of 11 Old 04-24-2011, 09:18 AM Thread Starter
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Originally Posted by Saltfishr View Post
What are your temps now, before flushing?
At a steady 65, ambient of around 50F, empty truck, the ECT shows 181-182, think I need to change the tstat, and the EOT is around 190.

'06, XLT, F350 FX4, Auto, Ext. Cab Short bed
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post #8 of 11 Old 04-24-2011, 09:27 AM
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Originally Posted by beemerbiker5 View Post
At a steady 65, ambient of around 50F, empty truck, the ECT shows 181-182, think I need to change the tstat, and the EOT is around 190.
That's the same delta I have. Only difference is, my temps are running 10°higher than yours. My ECT is running 190-192 and EOT is 200-202.
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post #9 of 11 Old 04-24-2011, 11:15 AM Thread Starter
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I figured since I'm going to do the coolant flush, and the tstat should be removed to do this, just as soon put in a new one, peace of mind sort of thing. Based on the great how-to by PGreen.

'06, XLT, F350 FX4, Auto, Ext. Cab Short bed
Diamond Eye Turbo-back 4" exhaust.
CC Mod
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Coolant filter
Blue Spring upgrade
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post #10 of 11 Old 04-26-2011, 01:00 PM
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Just curious, why would flushing after adding coolant filter not be a good idea?
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