Chevrolet Light - Page 40

Other alcohol and methanol anti~freeze should be used in
accordance with instructions issued by the anti~freeze manu·
facturer.
Ethylene Glycol. Ethylene glycol is, in fi rst cost, more expen-
sive than alcohol. Eth y lene glycol anti.freezing solutions have
the distinct advantage of possessi ng a somewhat higher boiling
point than alcohol anti-freezing so luti ons and, consequently,
may be operated at a higher temperature, resulting in a more
effective performance of the heater.
Ethylene glycol has the further advantage that in a tight
system only water is required to replace evaporation losses.
However, any solution lost mechanically through leakage or
foaming must be replaced by additional new solution. Under
ordinary condition s ethy l ene glycol solutions are not injurious
to the vehicle finish.
"GM Ethylene Glycol" is especially treated and compounded
for use in the cooling system. Other ethylene glycol prepara-
tions are available, but on ly those containing suitable corrosion
inhibitors and compounded for use in automotive cooling sys-
tems s hould be used.
GM ETHYLENE GLYCOL PROTECTION TABLE
QUI'!S ~f GM £tnylene Glycol R eq u i r ~ ~ for Anti·Fr M l ~
Protecti ~ •• t Te mperatur e. ,no .... be low
3 4 5 & 7 8 9 10
~W80Qo _ 12" _26 " ~----
*16 17" 10° 2° -8 " -1 9" - 34" -5 2"
17.5 H) o' ]3
0
6
0
_2° _12° _24
0
_38
0
_52 0
'18.5 20 " 15" 8" 1" _8 " _1 8" -31" _ 46 "
See Page 98 for cooling system capacity .
*A Hot Water He ater adds about one qu a rt to Standard
System Capacity.
Other ethylene glycol anti-freezes should be diluted in
.accordance wi th the instructions issued by the anli-freeze manu-
facturer.
Glycerine. Radiator glycerine, which is chemically treated, in
accordance with the formula approved by the Glycerine Pro-
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