[Vwdiesel] Fw: Cooling system flushing

[Chris Geiser]

Tony hits the nail on the head... there's consistently "partial" coolant
changes happening: hose leaks, sticky thermostat, heater core failure,
plastic hose flange cracking, water pump swapping, head gasket failure... if
I could go more than 2 years without one of those occurring, I might start
to think about coolant longevity... but at 20 or more years old, most of our
vehicles will "self-require" opportunities to change coolant.

CG

**Sent with mobile device.
 On Nov 17, 2010 1:36 PM, "Tony and Lillie" <tonyandlillie1 at earthlink.net>
wrote:
> Your stuff must be more reliable that mine. In the last year, I've changed

> it on the Jetta and two of the 4000Q's due to fixing leaks. The Jetta was
a
> freeze plug heater (which I threw out) and one 4000 was the radiator, the
> other was the expansion tank.
>
> Tony
>
> ----- Original Message -----
> Subject: Re: [Vwdiesel] Fw: Cooling system flushing
>
>
>> Coolant has come a long way, the newer shell stuff is rated for life in
>> heavy trucks or construction equipment. You can buy an anti-corrosion
>> additive booster if testing shows it is necessary.
>> Off the top of my head, I don't recall when I last changed coolant in
>> anything. Oh, the 89 Jetta maybe 10 years ago when I was determined to
>> make
>> the heater put out heat- did the citric acid flush, de-bar's leaked the
>> core, jumped through half a dozen hoops... etc...
>>
>> But change coolant, hmm. If I had to change coolant in every piece of
>> machinery just once, it would generate around two hundred gallons of
waste
>> coolant. Not too smart, but good for the guy selling it. Why not test
>> the
>> coolant to see if it's used up? I routinely test mine every year in the
>> newer stuff, every few in the older stuff. Cylinder corrosion in some
>> engines is a real issue, and a leak there is not fun, but I would
consider
>> a
>> 2 year change to be bad advice.
>> -james
>>
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