pH, phosphate content, silicate content, bittering agent - Saab 9000 Bulletin Board - Saabnet.com
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pH, phosphate content, silicate content, bittering agent
Posted by 94 9000 CSE T (more from 94 9000 CSE T) on Fri, 3 Aug 2001 11:42:01
In Reply to: How does it come?, BillJ, Thu, 2 Aug 2001 17:11:16
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Concentrate. 50/50 mixture recommended.
According to the below link, "it contains special additives to keep the coolant from eroding alloy engine components and harming plastic cooling system parts. Mercedes-Benz brand antifreeze contains buffers to keep the pH of the coolant as close to neutral as possible, which then prevents erosion and corrosion of engine parts. pH is a measure of the relative concentrations of acids versus bases in a liquid. Other name brand formulations, while claiming to be specifically formulated for aluminum engines, do not contain the correct pH buffers."
OK, so that explains one characteristic, pH. What I am still confused about is whether pH neutrality, phosphate-freeness, silicate-freeness, and having a bittering agent are four separate, independent characteristics that a particular coolant may or may not have --- or whether two or more of these are equivalent. For example, does being phosphate-free and silicate-free automatically imply neutral pH? And what does color imply vis-a-vis these four parameters?
The Saab coolant claims to have the last three characteristics, but doesn't say anything about its pH. Could it be just as good as MB?
http://www.mbca.org/MBCA_Antifreeze.htm
Posts in this Thread:
- MB coolant --Is it really this good?, Aerophile, Thu, 2 Aug 2001 15:30:56
- MB miracle coolant?, Robert Davis, Thu, 2 Aug 2001 17:57:41
- How does it come?, BillJ, Thu, 2 Aug 2001 17:11:16
- Re: MB coolant --NOT really this good?, Sjer, Thu, 2 Aug 2001 17:11:05
- MB coolant -- What is the shelf life?, 94 9000 CSE T, Thu, 2 Aug 2001 16:34:33
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