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Originally Posted by supersteve
Withidl,
The MSDS sheet for Texaco and AC-Delco Dexcool lists the following:
Ethylene glycol
Diethylene glycol
Potasium 2-ethylhexanoate
Water
They use Potasium 2-ethylhexanoate Vs. Sodium 2-ethylhexanoate which is stated on the Prestone label. Apparently not all dexcool is created equal. Suprizing? Not really.
In either case the supposed benifit to Dexcool is that it forms a "protective barrier" to prevent corrosion. I suspect that "protective barrier" is what is causing the the gelling that I and so many others have found in their coolant systems. The PH of Dexcool is acutaully more acidic than that of the green stuff. Go Figure.
As far as the original question of this thread. You cannot mix Dexcool type antifreezes with other types (says so on the label). You can; however, mix the green stuff with all types (again, says so on the labels).
In all seriousness, I respect your brand loyaty; however, I personally don't think Dexcool is a better mouse trap.
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withidl,
I don't think anything I have stated as fact is untrue. You, on the other hand, have only listed opinon and advertising.
The info I listed above (MSDS) is from the web pages you are posting.
If you look at the webpages I listed from Prudue University you'll notice something different. They list the salts that are used in the proprietry formula. The ingredients add up to = 100%.
If you want to be as safe as you can, stick to BMW products for all your needs. If you want to be a little more prudent do your research. The only person you have satisfy is yourself.
We can go back and forth over this, I choose not to.
Peace, Out,
SS