Flushing the coolant system

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DCIV
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Flushing the coolant system

Post by DCIV »

My 3/s had mostly water in it. It’s old, sat, and I need to flush/clean it. My new water pump should be coming in and before I put it on I want to make sure I have it as clean as I can.

Before I go down the YouTube rabbit hole….any suggestions?


Coop
[quote=""Melis""]The cop asked Coop "Are you really a firefighter?" Coop was like "yeah" then the cop said "ok your in charge" then the cop left :lol:
[/quote]

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ChargerX3
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Re: Flushing the coolant system

Post by ChargerX3 »

50/50 mix. Which water pump did you get? Is oem even an option anymore. Lots of bad quality water pumps out there that fail abruptly and ruin engines.
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vr4
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Re: Flushing the coolant system

Post by vr4 »

if its rusty due to running mostly water youll want to do a chemical flush.

https://fcsdchemicalsandlubricants.com/ ... ails?id=82

ive also been converting all my vehicles to the new motorcraft yellow coolant. its very good.

https://fcsdchemicalsandlubricants.com/ ... vc1&id=107
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DCIV
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Re: Flushing the coolant system

Post by DCIV »

ChargerX3 wrote: Thu Jun 04, 2026 5:47 pm 50/50 mix. Which water pump did you get? Is oem even an option anymore. Lots of bad quality water pumps out there that fail abruptly and ruin engines.
I got the billet one from euro spec coming. Says it will be here today actually.


Coop
[quote=""Melis""]The cop asked Coop "Are you really a firefighter?" Coop was like "yeah" then the cop said "ok your in charge" then the cop left :lol:
[/quote]

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DCIV
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Re: Flushing the coolant system

Post by DCIV »

vr4 wrote: Thu Jun 04, 2026 5:54 pm if its rusty due to running mostly water youll want to do a chemical flush.

https://fcsdchemicalsandlubricants.com/ ... ails?id=82

ive also been converting all my vehicles to the new motorcraft yellow coolant. its very good.

https://fcsdchemicalsandlubricants.com/ ... vc1&id=107
Great info. Thank you. How much of the motocraft to water do you mix?


Coop
[quote=""Melis""]The cop asked Coop "Are you really a firefighter?" Coop was like "yeah" then the cop said "ok your in charge" then the cop left :lol:
[/quote]

DCIV: first to 2,000,000 rep points :)
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