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Old 01-30-2011, 05:51 AM
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Coolant flush question

Hi all,
I bought my Edge Insight last month, and have been watching EOT and ECT pretty close. It's no more than 7* difference at highway speeds. At idle/in town its 2-4*. I've got 80,000 on her with original Gold coolant. I'm planning on flushing and refilling with ELC EC1 coolant ASAP. Since the temps never get more than 7* apart should I flush with VC-9 or just leave it alone and put new coolant in?
Thanks!
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Old 01-30-2011, 06:05 AM
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Use the VC9.................
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Old 01-30-2011, 06:07 AM
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i just flushed with distilled water, but vc-9 is recommended, whether its clogged up or not. Im just, lazy, and didnt do it.
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Old 01-30-2011, 09:30 AM
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VC9 is an Iron Cleaner and will do nothing to unclog a plugged cooler. You should flush your cooling system with Restore to dissolve the stuff that the Ford Gold Coolant leaves behind, then flush with VC-9 to remove calcium & scale deposits.
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Old 02-02-2011, 08:12 PM
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Got all my stuff together, going to do my coolant flush tomorrow. I have a homemade filter setup mounted already but not plumbed in yet until I do the flush. I will post a pic or 2 when I'm done.
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Old 02-02-2011, 11:53 PM
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Here is the flush that is outlined by Mitch PGreenSVT
2 stroker



Flushing and cleaning the 6.0

Restore is for cleaning out any silicate goo. VC-9 is for cleaning out iron and scale. Restore Plus is the same as VC-9 and cheaper.

To flush drain the coolant by removing the lower radiator hose from the radiator, and removing the drain plug from the driver side of the block. There is a drain plug on the passenger side also but you have to remove the starter to get to it. I don't bother with that one. You can skip the block drains if you want except for the final drain before adding fresh coolant. You will just have to flush a few more times to get the block clear.

I also highly recommend you pull the thermostat out on your first drain and put the housing back without the thermostat. It only takes about 10 minutes and will save you 2.5 hrs or so in doing this whole procedure.

Ok now put the lower hose back on and the drain plug back in the block if you removed it. This is the procedure you will use each time to drain the system, except you will not touch the thermostat again until you're finished the whole procedure. Make sure that you set your heater to high while doing this to flush out the heater core as well.

Fill the cooling system with tap water, start the truck and let the water circulate for 5 minutes. (if you did not remove the thermostat you must run the truck until the thermostat opens + 5 minutes to circulate. This takes 15 to 20 minutes each cycle and is why you should just remove the thermostat) Stop the engine. Drain the system and repeat the flush.

Now add at least 1/2 gallon of Restore and fill with tap water. Drive truck or run on high idle for 60-90 minutes. Drain and flush 3 or 4 times.

Add 2qts VC-9 or 1/2gal of Restore Plus, top with tap water, and drive the truck or run on high idle for 60-90 minutes. Now drain and flush until flush water comes out clear and clean. When you get clean flush water, flush 3 more times using distilled water if you are draining the block or 5 times if not. This is to replace any tap water in the cooling system with distilled water and very important.

After your final distilled water drain it is time to put the thermostat back in. I recommend you install a new thermostat at this point. They are only $20 or so and it is good maintenance procedure to do so. Fill with 3.5 or 4 gals of ELC concentrated coolant and top off with distilled water. Drive the truck or let run for a while topping off with distilled water. Check the truck over the next few days and top up as required while any air left in the system works its way out.

Keep some 50/50 ELC on hand to use to top off the cooling system from here out and you are good to go.

Hope this helps.

Mitch

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05 F250 Harley, Airaid, Edge Insight, SCT X3, SRL+, Gulf Coast, Nitto, 03 turbo, Vegistroke, Sinister, ARP, AirdogII, PMF 4 link & traction bars

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Old 02-03-2011, 02:51 AM
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If you're going to flush, might as well do it correctly. Follow 2 stroker / PGreenSVT's procedures and you won't have to worry about it again.
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Old 04-28-2011, 02:29 PM
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Whats the best place to buy distilled water? and how much is usually needed?
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Old 04-28-2011, 02:31 PM
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Quote:
Originally Posted by Diesel Addict View Post
Whats the best place to buy distilled water? and how much is usually needed?
Publix, walmart..

Cheaper than dirt haha. I paid .69 the other day per gallon
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Old 04-28-2011, 04:46 PM
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what size of container would be neccessary for this operation? And is it safe to drive around with just the Restore and tap water in the system?
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