[AT] antifreeze toxicity was OT - oil stop leak

[Brice Adams]

I've used propylene glycol, Sierra, in all my old tractors for 20+ years
without trouble.
I think it's about 2X ethylene glycol in price.

On Sun, Feb 17, 2019 at 1:49 PM James Peck <jamesgpeck at hotmail.com> wrote:

> US manufacturers are supposed to be adding denatonium benzoate to ethylene
> glycol to make it taste bitter.
>
> https://en.wikipedia.org/wiki/Ethylene_glycol
>
> The sweet smell is how you know you are leaking coolant. The additives may
> affect the smell.
>
> The oral lethal dose for humans  is way more than a taste.
>
> Propylene glycol is a substitute and antifreeze with it is available. I do
> not know the cost difference. Propylene glycol is also used as a food
> additive.
>
> https://en.wikipedia.org/wiki/Antifreeze
>
> I have been buying antifreeze based on price. Maybe I should change my
> ways and buy propylene glycol brands.
>
> Does anyone know of any reason why antifreeze based on propylene glycol
> should not be used in older tractors?
>
> [ John Hall] Agree, stench is added to some pesticides, why can't it be
> added to this?
>
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