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Old 03-26-2011, 08:34 AM   #21
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RE: antifreeze

We started stocking the "premixed" AF on our service vans a few years back. We generally stock the ELC as I recall. It simplifies the question of how much AF/ water is it gonna hold.
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Old 03-30-2011, 03:49 PM   #22
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RE: antifreeze

Ok... Thanks to you guys, I'm going to swap out the antifreeze with the low silicate version and distilled water. Are we all ok with Fleet Charge and distilled water from a gallon jug from the grocery store?

Now, I want to flush out the old stuff. I was planning on draining what's in there, filling back up with water, run the engine until up to temp (to let the thermostats open) then rinse and repeat. Any objection to this plan?
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Old 03-31-2011, 05:14 AM   #23
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RE: antifreeze

If you're going to flush, you might as well use a flush concentrate from the auto parts store.
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Old 03-31-2011, 05:51 AM   #24
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RE: antifreeze

Good idea. Can you run this up to temp?
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Old 03-31-2011, 08:41 AM   #25
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RE: antifreeze

Quote:
GonzoF1 wrote:
Good idea. Can you run this up to temp?
*I would follow the directions printed on the label.

*
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Old 03-31-2011, 02:54 PM   #26
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RE: antifreeze

Got some Peak flush today. Directions say to drain, fill back with water, run for 10 minutes, drain again, fill with water and flush solution while motor is running(!), drive for 3-6 hours (!), drain, flush with water, fill with coolant... HOLY CRAP-A-MOLEY.

Can you run a diesel that long on just water? I want to doubt it, but you guys are the experts.
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Old 03-31-2011, 03:28 PM   #27
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RE: antifreeze

Gonzo,* When you get this all figured out I might flush my engine too!

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Old 03-31-2011, 04:56 PM   #28
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RE: antifreeze

You can run on straight water it won't hurt a thing.
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Old 03-31-2011, 06:06 PM   #29
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RE: antifreeze

Just don't skimp on the number of flushes.*
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Old 03-31-2011, 06:39 PM   #30
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RE: antifreeze

A new Cummins QSB requires special Cummins premix coolant and I think there is a warranty concern without it. Older engines may be different but I'd choose expensive and proven materials for a powerplant to avoid costly repairs. Cheap and familiar has its place (Prestone) but if its not really meant for heavy duty marine engine use why risk it?
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Old 03-31-2011, 08:52 PM   #31
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RE: antifreeze

Quote:
Delfin wrote:
Just don't skimp on the number of flushes.*
*Why?

*
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Old 04-07-2011, 03:33 PM   #32
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RE: antifreeze

Quote:
FF wrote:
to 50-ish ratio of tap water. Not a great idea as most tap water has loads of goodies that can percipitate out , pluging heat exchangers etc. At 75c a gal for distilled , where is the saving, to equal the risk?

I agree.* Distilled water.
*

*
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Old 04-11-2011, 12:33 PM   #33
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RE: antifreeze

Here is what I just put into my new rebuilt Lehman 120 engine

*

http://www.valvoline.com/products/br.../antifreeze/43

*

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Old 04-14-2011, 06:06 AM   #34
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RE: antifreeze

Quote:
rwidman wrote:FF wrote:
to 50-ish ratio of tap water. Not a great idea as most tap water has loads of goodies that can percipitate out , pluging heat exchangers etc. At 75c a gal for distilled , where is the saving, to equal the risk?

I agree.* Distilled water.
*

*

*Not to mention the pH of tap water. Ever check that? Use that with your antifreeze and you're already behind the 8-ball.

*
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