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Old 10-16-2012, 09:47 AM
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Coolant Flush?

Im getting ready to do a coolant flush to get the ford gold cr*p out of my truck and install bypass coolant filter. My question is when I am preforming the flush will my oil cooler catch more junk in it and potentially clog up? Trying to put off changing the cooler a few more months till I am done with school.
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Old 10-16-2012, 09:55 AM
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Use a lot of water (garden hose), reverse flushing the heater core, oil cooler and radiator. One trick which I saw was to put the hose in the degas bottle, fill it up with the drivers side block plug out. When the degas overflows, start the truck and hit the gas a couple of times. The water will shoot out the block plug hole, taking the junk with it hopefully. Do that a few times, reverse flush the oil cooler, do the chemical thing, reverse flush the oil cooler.... will give your best chance of a successful flush.
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Old 10-16-2012, 10:08 AM
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If your deltas are good right now I would recommend for you to not touch it! Flushing with chemicals will most likely clog up your oil cooler... Do it when your out of school... UNLESS your oil cooler is alread clogging now.

Also, Install your coolant filter NOW to start cleaning the system and drive with it on for around 2k miles before flushing. by then the coolant filter "should" pick up most of the crap.
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Old 10-16-2012, 10:19 AM
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While I disagree with Eli that it will most likely clog the oil cooler, I will agree that IF it's not clogged, and you have a concern that you can not repair the vehicle *should* something happen, you certainly should wait until the timing is better for you. I don't think that a proper flushing with chemicals = replace oil cooler, but there is a potential risk that you certainly should guard against if you can't afford (time or money) to repair the vehicle should something happen. And add that coolant filter as soon as it arrives at your door step, just change the filter when you do things like flush.

Last edited by nylyon; 10-16-2012 at 10:25 AM.
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Old 10-16-2012, 10:36 AM
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I agree, it will clog with a chemical flush. Just google, there are tons of threads on it. I dumped the gold, flushed with tap, flushed with 24 gal of distilled, then added concentrate elc with the cat ec-1 rating. My deltas did not go up or down, installed a coolant filter.

Sent from my phone that somebody didn't help me get.
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Old 10-16-2012, 11:08 AM
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Thanks for the help guys! I don't think my cooler is clogged yet but i do occasionally see deltas that are 14-15* more times 7-10 so i guess for now Im just going to install the filter and hope for the best till summer comes around. I need the truck to get to and from school so as soon as I'm done ill be able to start the tear down
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Old 10-16-2012, 11:09 AM
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i,ve noticed some people just skip the restore+ flush.
I decided to go that route (restore only)and installed a coolant filter.
Changed my first filter after 5000 miles and the filter looked pretty clean.
Inside the filter can there was some kind of sand,..i tried to filter it with a 190micron paint sieve..but it didn,t catch all of it.
so it,s like somekind of dust or something.Hard to believe that such a fine material will clog up the oil cooler.


check your radiator hoses for rust particles,mine where clean.
after the flush i had the same delta,s +/- 1 degree.

sr master tech on youtube has a good video about 6.0 coolant flush.
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