Chevrolet Fleetmaster Series 1947 Owner's Manual page 32

be replaced by additional new solution. Under ordinary condi-
tions ethylene glycol solutions are not injurious to the car finish.
"GM Ethylene Glycol" is especially treated and compounded
for use in the cooling system. Other ethylene glycol preparations
are available, but only those containing suitable corrosion in-
hibitors and compounded for use in automobile cooling systems
should be used.
GM Ethylene Glycol Protection Table
Cooling System
Quarts of GM Ethylene Glycol.Requind for Anti-Freeze
Ca~cityin
Protection at Temperatur .. shown below
Qrts
1
2
3
4
6 6
7 8
9
- -
- -
- -
- -
- -
- - - -
- -
15
16 0 8 0
0
0
-120
-26 0
-43
0
- - - - - -- -
- -
- -- - - -
- -
16
17
0
10
0
2
0
_ 8 0
-19
0
-34
0
-52
0
Cooling system capacity is 16 quarts if hot water heater is used.
Other ethylene glycol anti-freezes should be used in accordance with instruc-
tions issued by the anti-freeze manufacturer.
Glycerine-Radiator
glycerine, which
is chemically treated, in accord with the formula approved by
the Glycerine Producers' Association, to avoid corrosion, is satis-
factory for use in the cooling system.
Servicing the Cooling System-
Before installing
~nti-freezing
solution, the cooling system should
be inspected and serviced for winter operation. The system
should be thoroughly cleaned and all loose scale and iron rust
removed.
Cylinder head gaskets should be tightened, or replaced if
necessary, to avoid the possibility of anti-freezing solutions leak-
ing into the engine or exhaust gas blowing into the cooling
system. Anti-freeze, or water, mixed with engine oil may form
sludge, which will interfere with lubrication and, in some cases,
may form varnish-like deposits which will cause gumming and
sticking of the moving parts.
thirty