cooling system gunk

[John S. Lagnese]

My 91 20V overflowed a bit the other day while just idling. It seemed all 
rusty. I added some orange coolant. Was this a mistake?
I did have the water pump changed last summer by some bozos who couldn't 
reset the timing correctly.Maybe they added the wrong coolant.
John
----- Original Message ----- 
From: "thejimrose" <thejimrose at gmail.com>
To: "Pantelis Giamarellos" <pantg at otenet.gr>
Cc: <quattro at audifans.com>
Sent: Tuesday, March 13, 2007 2:04 PM
Subject: Re: cooling system gunk


>i dont think audi uses an orange coolant. also the coolants are supposed to
> turn color to brown or something [from what i recall] as an alert that the
> coolants have mixed.
>
> On 3/13/07, Pantelis Giamarellos <pantg at otenet.gr> wrote:
>>
>>  Jim Hi,
>>
>> Land Rover is SUPPOSED to be able to provide you with this
>> "cleaner/neutralizer" for cooling systems where the blue/green coolant is
>> replaced with the orange one.
>>
>> BUT I can not be sure on whether the orange coolant LR sells is the one
>> that AUDI uses also.
>>
>> What I can be sure though is that the LR orange coolant is the same used
>> on BMW engines.  So if AUDI is using the same type of orange coolant as 
>> BMW
>> then this must be OK (a long string of "if"s ......)
>>
>> Take care
>> Pantelis
>>
>>
>>  -----Original Message-----
>> *From:* thejimrose [mailto:thejimrose at gmail.com]
>> *Sent:* Tuesday, March 13, 2007 6:59 PM
>> *To:* pantg at otenet.gr; quattro at audifans.com
>> *Subject:* re: cooling system gunk
>>
>> pantelis - good info, i have often wondered what the best way to really
>> flush out old coolant to allow for new [different] coolant to be used.
>>
>> i haven't heard in my audi travels of a 'cleaner / neutralizer' for
>> cooling systems. any idea where to get such a thing?
>>
>> i r+r'd the coolant on the a4 several months ago. the head was done on my
>> car at some point, the coolant i took out looked like used motor oil.
>> literally.
>>
>> i ran some prestone flush through it, then several cycles of distilled
>> [fill, run, flush, repeat] until it came clean. i then replaced with the
>> correct red audi [pentosin] coolant.
>>
>> my coolant still shows fine in the overflow tank, but i might drain a bit
>> to see what's going on in the radiator.
>>
>> it's a messy PITA job. but any lurking slime / sludge / goo / funk /
>> schmegma from the old/bad coolant is like a thorn in my brain.
>>
>> cheers
>> jim
>>
>>
>
>
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