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2003 f150 coolant flush

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Old 05-07-2016, 03:18 PM
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Originally Posted by DaytonLax14
If your truck has 130,000 miles and you suspect the radiator has never been flushed, is it safer to just drain and fill or should you proceed with a flush?
Be safe and flush.....pic of my old coolant coming shortly. Flushing right now as I speak
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Old 05-07-2016, 05:07 PM
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Truck had 166k on it. I've only owned it since 153k and it's safe to say it needed it. T stat didn't look as bad is I would have thought tho. Changed it anyways....lol
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Old 05-08-2016, 11:04 AM
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Wow that's some dirty fluid. What kind of coolant did you put back in it?
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Old 05-08-2016, 11:42 AM
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Your radiator ATF Cooler is leaking. Replace your radiator and change ATF ASAP!
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Old 05-08-2016, 01:46 PM
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^^^^


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Old 05-08-2016, 03:50 PM
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Do you all use motorcraft antifreeze/coolant? If so, which kind?
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Old 05-08-2016, 08:14 PM
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Prestone or Peak. Just make sure you dilute with distilled water, not tap water.
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Old 05-08-2016, 09:11 PM
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Originally Posted by Magnetic5.0
Just make sure you dilute with distilled water, not tap water.
^^^^
He nailed it.
Last edited by Jbrew; 05-08-2016 at 11:45 PM.
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Old 05-08-2016, 11:37 PM
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Originally Posted by w0lvez
Your radiator ATF Cooler is leaking. Replace your radiator and change ATF ASAP!
Can you elaborate? How is that possible? Trans cooler is separate system isn't it....?
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Old 05-08-2016, 11:38 PM
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Originally Posted by DaytonLax14
Wow that's some dirty fluid. What kind of coolant did you put back in it?
O'Reilly brand yellow and distilled water
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