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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

cooling sysytem flush

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Old Feb 12, 2014 | 07:02 PM
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cooling sysytem flush

Well when the nice weather returns, I plan on doing a cooling system flush on my 04 6.0 liter, ive never done this before on this truck and im seeing a lot of suggestion's about using FOMOCO VC-9 cleaner. Just wondering whats the difference with it? Why not use Prestone Flush? Thanks for the input, Im still learning about my first Diesel.
 
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Old Feb 12, 2014 | 08:40 PM
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IDK what in the prestone

VC-9 Is a Boiler rust cleaner

is your oil cooler plugged????
 
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Old Feb 12, 2014 | 08:52 PM
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I honestly don't know whats in the prestone flush, sounds like the vc-9 is a fairly heavy duty wash then. Nope no clogged oil cooler, just doing the maintenance thing
 
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Old Feb 12, 2014 | 09:04 PM
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If its not plugged I wouldn't use any cleaners a couple water rinse and put the coolant in it

don't pull that thermostat cause if theres any garbage in it it will kick it all up and plug that cooler what don't matter if the OC is already plugged you want to kick the junk up and flush it out

Iv seen guys with your situation go to town cleaning and end up plugging that oil cooler
 
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Old Feb 12, 2014 | 09:10 PM
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well I enjoyed that advice. thank...s do you recommend those brass valves for the engine block?
 
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Old Feb 12, 2014 | 09:53 PM
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I would recommend a coolant filter. As the stuff slowly breaks lose the filter has a change to get it before it gets stuck in the oil cooler.
 
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Old Feb 13, 2014 | 03:37 PM
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ok..thanks ill look into a filter
 
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Old Feb 13, 2014 | 11:11 PM
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The Fumoto valves in the engine block are great !! It makes life so easy when it gets done again.... the one by the starter is a TON of fun,,, but it can be done I think Benny is correct in saying no cleaner if your oil cooler is good.... Just Flush Flush Flush..... Are you going to The CAT coolant?
 
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Old Feb 13, 2014 | 11:42 PM
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CLR is always an option to use as a flush over the Motorcraft VC-9

IMHO I wouldn't use a chemical flush if your temps are well under the 15 degree @ 65 mph test.

Josh
 
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