<VV> Water pump lubricant

[4carbcorvair]

The new orange anti-freeze is NASTY  stuff. And GM knows it. I don't
know how many GM vehicles I have seen or heard of with bad intake
gaskets. The coolant is eating them up. Dealerships know of this,
however will not say much. Recomended cure? Flush the system REALLY
well and install the green coolant. The green isn't so corrosive,
especially towards the recomended coolant change time.

http://www.consumeraffairs.com/automotive/gm_dexcool.html

http://www.wcpo.com/wcpo/localshows/dontwasteyourmoney/20299ce7.html

http://www.autoforumz.com/GM-Intake-Gasket-Failure-ftopict110370.html

-- 
Ron Tinkham

66 Corsa Convertable, 140, 4sp.
Maine

"Well April Fool's day is over so I'll venture some info.   I used to do all 
the mechanical work on my mother's and sisters'  cars and had to do a lot of 
cooling system work.  The green antifreeze from the sixties (and
today) includes
the additives the water pump needs for lubrication and seal health.   It also 
includes additives that buffer the inherent corrosive nature of the 
antifreeze itself.  (The new long-life orange antifreeze does too). 
The reason to
remove, flush and replace the antifreeze at regular intervals was partly to put 
new stuff in before the old stuff got too corrosive and damaged the 
engine/cooling system.  I sometimes used water pump additives
(Prestone or Dupont No. 7)
specifically designed as "water pump lubricant" until a Presone Tech told me 
they were a waste of money because the fresh antifreeze was adequate
for the job
alone.  I also used distilled water with the antifreeze to make the correct 
mixture so I didn't introduce chlorine or other additives that were in the tap 
water.

Bob Hall
Group Corvair"