The use of water out of the tape for cooling systems IMPHO is a NO NO! I
have always use distilled water, it is very inexpensive and typically about
90 cents a gallon depending on what part of the county you live in. Tap
water has your minerals of the day depending where you live. We spend our
winters here in Tucson and the water here is from the Colorado river and
many deep wells (150+) in the Tucson area. The water here is high in
minerals including carbonates and is fairly hard (ave of 215 mg/L) You can
really see the carbonates if you look at the walls of Lake Mead is most
noticeable when you look at pictures of Hoover Dam and the white appearing
walls. of the lake. The first year we were here in winter 2010/2011 the
fixtures of the bath and kitchen sink had a white powder buildup by the
time we ended our 4 1/2 month stay. I later years we used a water
softener to reduce the mineral load and it worked reasonably well.
Sorry for the long winded comments, but if you use tap water you are
creating your own problems, again IMPHO. Use only a quality antifreeze and
dilute to a 50/50 mixture, I make my own by using a empty 1 gallon
container and filling it half way with antifreeze and the balance with
distilled water and continue until I make about 6 gallons of 50/50 mix.
You need this much for a flush and change and I have an auxiliary HVAC unit
in the coach that requires extra coolant. I always carry a gallon of mix
for top-off of the coolant reservoir. In a pinch while on the road you can
use the premix that is sold, but you are paying for very very expensive
water (1/2 gal AF @ $4.50 & 1/2 gal of H2O $4.50) That make the water coat
$9 per gal. You can make your own 50/50 mix of antifreeze for +/- $11 a
gal and distilled H20 for 80 cents for a total of $12 +/- for 2 gal of
antifreeze for your coach at about half the cost of premix of the same
volume.
The real expert is Emery who sold antifreeze products for Dow and know the
ins and outs.
Again just IMPHO and you can do and spend as you wish.
Regards,
J.R. Wright
GMC Great Laker
GMCGL Tech Editor
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Under going Frame up Restoration)
On Location in Tucson ( We don't do winter)
On Mon, Jan 20, 2020 at 9:14 AM D C _Mac_ Macdonald via Gmclist <
> Good on ya, Dave!
>
> D C "Mac" Macdonald
> Amateur Radio K2GKK
> Since 30 November '53
> USAF and FAA, Retired
> Member GMCMI & Classics
> Oklahoma City, OK
> "The Money Pit"
> TZE166V101966
> '76 ex-Palm Beach
> k2gkk + hotmail dot com
>
> ________________________________
> From: Gmclist on behalf of Dave Silva
> via Gmclist
> Sent: Monday, January 20, 2020 10:09
> To: gmclist
> Cc: dave silva
> Subject: Re: [GMCnet] Freeze Plugs- what do i need to know ?
>
> > Never run just water. CORROSION let alone freeze damage. I'd replace the
> leaking ones and add coolant for now, until further investigation can
> > happen.
>
> Forgive me for I am a SINNER!
>
> I've had the coach 10 years, for about seven of those years I really
> wanted it gone. But now i have two boys and they love it so we are diving
> back
> in with family support.
>
>
>
> --
> Dave & Ellen Silva
>
> 1972 Revcon Olds 455, toro drive train. All Stock
>
>
>
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