1935 Cadillac - GM Heritage Center

Cooling System
The radiator filler cap
is located on the right hand
side of the engine under the
hood. When the car is delivered
to the owner, the
cooling system contains, in
addition to the water and
whatever anti-freeze is used,
a small amount of a special
inhibitor which gives the
Fig. 24. The radiator filler cap is on
cooling liquid a milky appearance.
This inhibitor
the right hand side of the car under the
hood.
has particular advantages in
reducing foaming and retarding the formation of rust and scale,
thus helping to keep the cooling system clean so that it will
better perform its cooling action. It is not necessary to add the
inhibitor each time water or anti-freeze is added. Whenever
the cooling system is drained and refilled, however, it is recommended
that J|j of a pint (about 6 ounces) of a suitable inhibitor
be added. Consult your distributor or dealer concerning the
proper inhibitor to use.
In freezing weather a suitable anti-freeze solution, such as
those described on page 26, should be used. The inhibitor, although
it has no anti-freezing qualities in itself, will blend satisfactorily
with any approved anti-freeze but should not be used
with any solution already containing a similar inhibitor (see
page 27). Allowances must, of course, be made when testing
the cooling solution for the effect the inhibitor has on its
specific gravity.
Before the start of cold weather, the cooling system should be
cleaned and thoroughly inspected to make sure all connections
are tight. If the inhibitor is used, this cleaning will suffice
for the entire year; otherwise it is advisable to clean it
thoroughly every 6000 miles, using the reverse flow method
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which is standard at all Authorized Cadillac-La Salle Service
Stations.
If this is not possible, a satisfactory cleaning, although not
as effective as the reverse flow-method, may be obtained by
using the following procedure:
Run the engine until the opening of the radiator shutters
indicates that the engine is warm; then stop the engine and open
the drain valve on the righthand
side of the engine as
shown in figure 25. After the
liquid has drained off, refill the
cooling system with warm
water, run the engine for a few
moments, and drain the system.
Repeat this operation until the
water is clean when it is
drained.
In cases where the accumulation
of rust and scale is so great
that this method does not clean
the system sufficiently, the
flushing operation should again
be repeated after one or two
handfuls of sal soda have been
added. Care must be taken, of ,
^ sy stcm ,
T n e c o o l i
drained by opening the one valve. Ihe
course, that the cooling system V-12 is shown above, the V-8 below,
is thoroughly flushed after this
operation to clean out all traces of the sal soda, and that none
of the solution is allowed to reach the car finish.
Gasoline System
A gasoline filter is provided at the bottom of the fuel pump on
the front left-hand side of the engine. Any accumulation of
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