[V8] [SPAM][4.2] Re: Who's had a bad had gasket?

[32VQUATTRO]

I've used this in the past and like it.  Problem is this (and I can't stress 
this enough) whenever switching antifreeze type, you must do complete flush. 
I use the multi step method over a period of a few days. Preston makes a 
cleaner and flush. I use both as directed.  I then run the car for day or so 
with straight water. If water changes color(green, red, or what ever color 
you had in there before), continue flushing. Once you are confidant the 
water has stayed clear, drain and fill with a phosphate free antifreeze. 
This is where most Audi guys screw up. You must use distilled water with 
phosphate free antifreeze. If you choose to use tap water, you will 
eventually have  scaling problem
----- Original Message ----- 
From: "Dave Saad" <dsaad at icehouse.net>
To: "V8List Fans" <v8 at audifans.com>
Sent: Monday, April 06, 2009 1:53 PM
Subject: Re: [V8] [SPAM][4.2] Re: Who's had a bad had gasket?


> My head gasket developed a coolant leak - not to the combustion
> chamber or oil jacket, just seeped down the side of the block.  I am
> pretty sure it was because I unknowingly used the Zerex version of
> dexcool for several years.  It seems that every GM car on the road
> with this stuff develops coolant leaks on gaskets.  I didn't know
> about this then.  I switched to the Zerex specified for my car (G-05)
> and so far so good.  I don't go with the Audi juice just because if I
> have a problem out on the road, I can always find the Zerex stuff.
>
> I used the same Zerex in my explorer(s) and Audi 100 with no problems
> but who knows if they developed problems after I sold them.
>
>
> The green is fine for iron motors but as pointed out, it is hard on
> aluminum and causes long term degradation.
>
> Dave
> On Apr 4, 2009, at 4:50 PM, 32VQUATTRO wrote:
>
>> I respectfully disagree Cobram.  While I agree its ok to use none Audi
>> antifreeze, it should be a silicate and phosphate free antifreeze.
>> There is
>> a member on one of the other Audi forums with an AAN head that has
>> corroded
>> water jackets, rendering the head useless due to the green stuff. With
>> premium aftermarket antifreeze selling upwards of 13-14 dollars now,
>> I spend
>> the little extra, and buy the o.e. g12 for $18 per gallon from Audi.
>> That's
>> cheaper than the $12 per liter for Pentosin
>>
>> Allan
>> ----- Original Message -----
>> From: <cobram at juno.com>
>> To: <toml99 at todomundo.com>
>> Cc: <v8 at audifans.com>
>> Sent: Saturday, April 04, 2009 3:03 AM
>> Subject: Re: [V8] Who's had a bad had gasket?
>>
>>
>>> Anything but the run of the mill green (blue or whatever), safe for
>>> aluminum coolant is a waste of money.  This was beaten to death on
>>> the
>>> main list a while back, with a resident industrial chemist
>>> explaining it.
>>> I've been running the "evil green" Prestone in all my Audi's
>>> (including
>>> 2 V8Q's) for over 2 decades now (starting with my '84 5KS and
>>> lesser '82
>>> 5K before that), if something was going to happen, I figure it should
>>> have by now.
>>> Never had a head gasket problem on any of them.  Any engine that
>>> starts
>>> blowing head gaskets en mass is a design, manufacture or material
>>> flaw,
>>> IMHO.
>>>
>>> BCNU,
>>> http://www.geocities.com/cobramsri/
>>> "God's a kid with an ant farm. He's not planning anything."
>>>
>>> "toml99 at todomundo.com" <toml99 at todomundo.com> writes:
>>>> Hey, was just thinking about stuff, and was wondering on a
>>>> percentage
>>>>
>>>> base, who's had a head gasket problem?.....Most steel block/aluminum
>>>>
>>>> head cars have issues around 150K, and was reading on the Saab site
>>>>
>>>> tonight that many are going to a phosphate-free type of coolant.
>>>> Pearl car still has the green coolant in it(evil), and plan to fix
>>>>
>>>> that this weekend.  Don't hear of a lot of people complaining of
>>>> head
>>>> gasket issues with the v8....(good thing).  With a properly
>>>> maintained car, who's had a head gasket issue?.....Just looking for
>>>>
>>>> another reason to validate our obsession.........Tom
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>>
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>
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