The Washington times., 1922-09-17

tenderfoot who chokes his motor
on this very slight grade. simply be.
cause the clutch and throttle is not
handled when the car ahead slows
up, or the gears are not shifted AT
the right time. II Is not because OF
lack OF power for note some or the
best hill-climbing cars built cause
this jam at times, therefore, when
meeting obstacles on tours that you
are not used 10, proceed carefully
until you form an acquaintance win
the new conditions, and watch the
water level In your radiator Tor the
best cooling car In the world can be
made to overhead when not handed
properly on grades.
The use of water and temperature
indicators In the radiator caps VIII
help YOU to watch your cooling sys-
tenn while In motion. These are
made In many forms and shapes.
Some have connections leading from
the upper tank of the radiator to the
Indicator on dash, while most OF
them are mounted directly In the
radiator filler cap.
The temperature indicator Is moth
ing more than q thermometer grad
uated SO as to show the danger
marks in both directions, that Is,
oyerheating and overcooling. The
latter, Of course, Is winter con-
dition. This form Of indicator
works very satisfactorily on cars
having water circulation by pump.
However, II is liable to be mislead'
ing when used on cars that employ
the thermo-syphon system Of water
circulation, until the operator De-
comes familiar with the character
istics of this system.
The water indicator. which IL
nothing more than a simple float
gauge is recommended for thermo-
syphon cooling systems-cars with
out water pumps-because the water
in the average syphon system passes
from motor to radiator at a higher
temperature than those with pump
circulation; that IL, from 1S0 TO 2l0
degrees at high speeds or on heavy
grades. On the temperature re-
corder this would show a danger
while in reality It is a CHARACTERISTIC
of the syphon cooling systems and
Ia not dangerous. The water indi-
Gator would register the actual level
in this case, therefore, would not be
misleading.
These two instruments can be pur-
chased at most any supply house
and are useful as well as ornamen-
tai.
II your car happens to develop
overheating all of a sudden, inspect
carefully for leaks. first Of all hose
connections and at the drain COCK.
See that the drain cock lever Is tight
in its seat, II this is easy to turn,
there is danger OF small rocks flying
up and causing II to open. II Is not
at all uncommon for the drain valve
to Jar open from road vibration II
II turns very freely.
Keep Instructions such as large
license tags, ornaments. baggage or
other equipment away from the radi-
ator. See that the cells do not be-
come clogged with mud or other
foreign substance. Be very careful
in painting the cooling surface Of
radiators. Use very light dull black
paint, as heavy paint will retard the
ability Of the fins to carry off the
heat. This portion Of the radiator
Is very sensitive and should be kept
clean.
Other points in connection with
cooling are fan blades which should
always have proper pitch, tight fan
belt. correct mixture in carburetor,
ignition timing. and the possibility Of
brakes dragging, low tires, etc.
Running out Of water or overhead.
ing does not always destroy the mo-
tor, but II does warp valves. takes
the life out Of piston rings and may
score cylinders. 1t will cause a loss
of power and economy and irregu-
lar running Of motor. Therefore,
watch your cooling closely when
driving under conditions that you are
not familiar with.