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Old Oct 4, 2025 | 02:02 PM
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Coolant water

Has anyone used dispensed machine water instead of distilled with anti freeze change?
 
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Old Oct 4, 2025 | 04:24 PM
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Most dispensed machine water is tap water through one or more additional filters. Not worth the expense in my book. And no, I would not use it if your doing a flush and fill with ELC.
 
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Old Oct 4, 2025 | 07:05 PM
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My last MAJOR coolant change I flushed twice with distilled water, then added distilled water to my new Extended Life Coolant
 
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Old Oct 5, 2025 | 02:11 AM
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No way.

Distilled only imo.

 
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Old Oct 5, 2025 | 11:15 AM
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I guess you're the same one that asked on another diesel board about this. I wouldn't hesitate to use reverse osmosis filtered water but for the 20 dollars or so more it would cost for distilled water and the peace of mind you want use the distilled.
 
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Old Oct 5, 2025 | 11:29 AM
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Originally Posted by Eman85
I guess you're the same one that asked on another diesel board about this. I wouldn't hesitate to use reverse osmosis filtered water but for the 20 dollars or so more it would cost for distilled water and the peace of mind you want use the distilled.
Dollar General they sell distilled by the gallon for same price as the drinking water. They sell a lot of it to cleaning businesses that fill their steam cleaners and carpet cleaners with it.
 
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Old Oct 5, 2025 | 11:41 AM
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yup, Distilled water here at DG is about 89 cents/gallon.

and at Harps Grocery, maybe 99 cents?
 
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Old Oct 5, 2025 | 01:38 PM
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Seems a waste of money if the water is basically same as distilled. I’m not using elc. Standard green + the additive.
I evaporated some machine water and 0 deposits left
 
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Old Oct 5, 2025 | 01:39 PM
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Gallons

How many gallons does a 2000 7.3 hold?
 
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Old Oct 5, 2025 | 01:40 PM
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Flush

I just want to flush with machine water. Distilled in final charge
 
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Old Oct 5, 2025 | 01:44 PM
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Being you only want to flush with it I don't see a problem. I now others will disagree.
It would have been nice if you added that important tidbit of information on your initial post. It would have changed a lot of responses and gave members a clearer picture.
 
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Old Oct 5, 2025 | 02:43 PM
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Flushing out I would just use hose water. Maybe not if you have really hard well water but if you have a water softener system or city water its fine. There will be some left in there but not enough to matter when diluted down into the 5 or 6 total gallons the system holds.

The halfway step of refilling with straight distilled and running for a bit is for the guys switching from standard green or Ford gold to ELC (typically red) and wanting to get all of the old stuff out, but if you're just flushing out old green for new green I probably would just drain the rad and pull both block plugs and refill with 50/50 green. Whatever is left in the engine (not much) will already be 50/50 mix. If you flush it with straight water you'll want to follow the Gooch procedure of pouring in concentrate first then topping off with distilled to get the mixture right. I'd also pour in the VC-8 charge before adding the distilled. Might be a full bottle of that at least but cant remember what the bottle says.

Does your engine have a serial number that's too old for ELC? You don't need the additive if you switch to heavy duty coolant.
 
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Old Oct 5, 2025 | 02:59 PM
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I think the capacity is about 8 gallons after total drain, including block plugs?
 
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Old Oct 5, 2025 | 09:24 PM
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Originally Posted by clawsd
How many gallons does a 2000 7.3 hold?
7.3 Coolant Capacity

Coolant: 32.75 quarts.




 
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Old Oct 6, 2025 | 02:38 AM
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Originally Posted by John in OkieLand
7.3 Coolant Capacity

Coolant: 32.75 quarts.
O yeah! I love 8 gallons of coolant! One of the specs that first caught my eye back when I was looking at trucks.

Plus the ginormous oil volume. Both scream durability.

 
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