Re: antifreeze

[tedcrum@xxxxxxxxxxxxxxxxxxxxx]

BMW antifreeze and Dexcool will perform similarly with respect to the 
sludge pickup mentioned in the article you reference, since they are both 
based on the same OAT non-phosphate formula. So it's hard to recommend one 
and blame the other.

- -tc

> 
> Personally, I'd recommend sticking with BMW antifreeze, mixed with DISTILLED 
> WATER.  BMW antifreeze doesn't contain phosphates, and I believe that it's 
> also silicate-free.  Prestone (green) contains both.
> 
> Flush the system completely, and drain the fluids from the radiator AND the 
> engine block (there's a block drain plug on the right side of the engine, 
> toward the rear of the engine).  I used Lubro-Moly's cooling system flush to 
> clean things out (E34 525iT), and it did a good job.
> 
> Regarding Dex-Cool, there are many bad reports from people who either 
> converted to Dex-cool, or bought a car that was filled with Dex-Cool from 
> the factory.  Search the Internet for "dex-Cool" and you can find them.  
> Here's one note (of many) that I found:
> 
> http://www.geocities.com/MotorCity/Downs/3837/dexcool.html
> 
> I did the Dex-Cool antifreeze (and distilled water) switch several years ago 
> in my E30 318i, and ended up experiencing some of the problems with sludge 
> appearing in the radiator, fluctuating coolant temps, etc.  I switched back 
> to Prestone (and distilled water) and the problems went away.
> 
> 
> Ron Buchalski
> BMWCCA #76387
> 1995 E36 M3
> 1993 E34 525iT
> 1999 Mazda Miata
> 
> 
> 
> 
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- -- 
Ted Crum
tedcrum@domain.elided

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