6.0 coolant flush - Ford Powerstroke Diesel Forum
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Old 03-05-2012, 11:55 AM
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6.0 coolant flush

i am ready to do a coolant flush and change to ELC EC-1.
Bought 25 gallon of dist.water -restore & restore plus and a coolant filter.

Truck has 72000 miles delta,s ECT 185 EOT 188 at 65mph at 50 weather temp
189/194 towing a 7000lbs trailer at 50mph
I think my oil cooler is fine,..i hope the chemical flush will not clog it up.

Anyways,..i,ll try some back flushing after the restore+ and maybe a backflush and degas flush at the same time with a removed T-Stat....i have to dig into that one a little more.

I have a ELC but only in a 50/50 mix as i can not buy a concentrate over here.(europe)unless i use the gold from the dealer...but that is not what i had in mind.

After my last flush with distilled water,i must drain as much of it as i can.
Heater core - radiator core -block both sides.
how much water will still be in there?
Can you get all the water out?
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Old 03-05-2012, 12:01 PM
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No, you won't be able to get all the water out. That is exactly the reason you should use concentrated coolant and not a 50/50 mix. By adding the 3.5 - 4 gallons of concentrated coolant you are roughly making a 50/50 with the water that you can't get out of the system.
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Old 03-05-2012, 12:24 PM
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ok thanks,

but i can not buy a ELC CAT EC-1 concentrate,...so the only thing i can do is drain some diluted 50/50 and add fresh 50/50.

Our winters are -1 fahrenheit,...max so i could do with a 60-40 mix...right?
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Old 03-05-2012, 12:27 PM
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Interesting. I had the opposite problem. The only thing I could find was the concentrate. I guess different countries stock it differently.

Correct, in those temps you wouldn't want to go more than 60/40. Best would really be 50/50. Its going to be REALLY difficult to achieve your goal using the premixed coolant.
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Old 03-05-2012, 12:54 PM
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well 4 50/50 flushes should do the trick...lol...$$$

the last few hours i searched about every flush thread i could find,iirc somebody mentioned there will be aprox.2 gallons left.

ok i think the flush will have to wait untill i can find some concentrate,....or go with the gold.
thanks.
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Old 03-05-2012, 02:04 PM
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You can never get to 50/50 mix after a distilled water flush by adding 50/50 coolant - never.

AFTER flushing w/ distilled water the last time, you can charge it w/ 50/50, drain it and recharge it - and repeat 4 or 5 times and get close (you get closer with the block drains open), but you throw away a lot of coolant that way.

Your engine retains 7 quarts of water (assuming you drain both sides of the block) and at least 12 quarts if you do not drain the block).
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