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Old 10-29-2019, 08:29 PM   #21
paul2748
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Default Re: antifreeze?

I was at Wal-Mart today and found both Zerez and the house brand. They had a lot for sale. 9.88 a gallon (not he 50/50 mix)


The 50/50 was 7.88 a gallon - mighty expensive water.
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Old 10-30-2019, 06:16 AM   #22
tmiller6
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Default Re: antifreeze?

The original green permanent antifreeze is actually a ethylene glycol.

Propylene glycol is the non poisonous stuff commonly tinted pink and used as RV plumbing antifreeze.

Propylene glycol can also be used as an engine coolant. Some racing engines are running 100 percent undiluted propylene glycol. When used in its pure form, it is highly refined and not a Walmart offering.
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Old 11-02-2019, 12:56 PM   #23
philipswanson
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Default Re: antifreeze?

Quote:
Originally Posted by 54vicky View Post
just an aside the strips mentioned can be purchased at a swimming pool supply store.they are used to check pool PH works for anti freeze as well
So what PH value works best in a cooling system?
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Old 11-02-2019, 07:29 PM   #24
Fordestes
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Default Re: antifreeze?

The only concern I have had regarding shelf life is silicate drop out, I have seen chunks of silicate settle to the bottom of plastic containers, if in a cooling system I use a volt meter to test for acidity normally caused over a period of time by dissimilar metals in the cooling system. I always try and use low silicate antifreeze such as peek , we had problems with waterpump seals failing in our diesel engines and the Engine manufacture attributed it to silicate drop out. if left untested/untreated for months there are risks of galvanic action caused by dissimilar metals .
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Old 11-02-2019, 07:55 PM   #25
hotrodrich
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Default Re: antifreeze?

Will the 'red' antifreeze work?
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Old 11-02-2019, 09:33 PM   #26
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Default Re: antifreeze?

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So what PH value works best in a cooling system?
I would think anything close to 7, which is neutral (distilled water).
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