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Re: What is the best coolant?
Hairy green toads from Mars made Freed, David say:
> All Antifreeze is Etholine Glycol. Prestone and some others add a
> sealant to the mix but you can add that if you feel the need. There is
> no difference between different brands. Buy the cheapest. BMW does use
> a diffent chemical for it's Antifreeze according to a BMW mechanic I
> know but I've never verified the difference. The color difference is
> the choice of Dye the Distributor wants.
Like oil and gas, antifreezes have a host of additives to provide
heat transfer, anti-corrosion properties, anti-scale, etc.
Most antifreezes use a phosphate compound for one of these, and
Audi radiators do NOT handle phosphates at all well. You have to
look for the "phosphate-free" tag; there are a couple of decent
brands that have it, including Prestone Silver, which I use.
Would you buy the cheapest, crappiest oil, just because it says
it's 10W-30? Oil is *not* all the same, and neither is Antifreeze.
Andrew L. Duane (JOT-7) email@example.com
Compaq Computer Corporation (603)-884-1294
110 Spit Brook Road
Nashua, NH 03062-2698
Only my cat shares my opinions, and she's too psychotic to express it