Downloaded from www.Manualslib.com manuals search engine you use an oil which, according to the label on the can
is (1) intended for service MS and (2) passes car makers'
tests or meets General Motors Standard GM 4745-M .
Oils conforming to these types contain detergent addi
tives. Your serviceman will be pleased to assist you in
selecting the proper oil for your car.
Check the oil level (with the engine hot) on the dip
stick frequently. Keep oil level between the FULL and
ADD marks, by adding oil when level is at or below
ADD mark. Do not overfill. Poor performance and pos
sible engine damage may result if the crankcase is
overfilled. Drain and refill the crankcase very 60 days
or 6000 miles, whichever occurs first.
For vehicles
in heavy duty operation involving con
tinuous stop-
start or prolonged idling, engine oil should
be changed after 2500-3000 miles of operation.
NOTE: When checking or adding oil, be care
ful to avoid spilling or dropping oil onto the
engine shrouding.
LOWEST RECOMMENDED SAE VISCOSITY OIL ANTICIPATED TEMP. SINGLE VISCOSITY MULTI-VISCOSITY
32° F. SAE-30 SAE-l0W-30
10° F. SAE-l0W SAE-l0W-30
Below -10° F. SAE-5W SAE-5W-20
33
COOLING SYSTEM CARE
The engine fan belt should be checked for tightness
at regular intervals. When a new belt is needed use only
the approved premium belt available from your Chev
rolet dealer. If any other belt is installed, replace with
recommended belt when possible .
Watch the TEMP-PRESS and GEN-FAN indicators on
the instrument panel for signs of overheating.
Air inlet louvers, located in the panel below the rear
window on Corvair models, or in the Corvair Greenbrier
upper rear quarter panels, supply air for engine combus
tion
and cooling and for the Direct Air Heater. Make
sure the louvers are never sealed or blocked.
BATTERY CARE
Check fluid level frequently. Keep filled with distilled
water to level of split ring in vent tube.
Downloaded from www.Manualslib.com manuals search engine cup at the end of the spark plug
wire
and the tubular metal con
nector inside of it. If the spark
plug wire is wet or oily, wipe it
dry. Wrap a dry handkerchief or
facial tissue, folded several thick
nesses, around the wire at least
three inches back from the end
and grasp wire at this point. Hold the bare wire about 1,4 inch
from the.
bare tip of the spark
plug from which you removed the
wir,e. When the engine is "turned Checking 'or Spark
over" a spark should jump across the 1,4 inch space, indicating
ample current supply. If no spark jumps, the difficulty is probably
caused by a defective ignition part and should be corrected by
your Authorized Chevrolet
Dealer.
COOLING SYSTEM
When the car will run but evidences serious overheating on the
temperature gauge in the instrument panel, there are several items
which may
be checked.
(L) Engine overheating will occur when the OIL LEVEL falls danger
ouslylow. Check the oil level as a malter of course.
CAUTION: Never drive the car when the TEMP-PRESS indicator in
the instrument panel is lighted. (See Page 9.)
50
(M) Check the air intake louvers . Clean them if they are plugged
with leaves or other foreign material.
(N) Condition of the FAN BELT
is very important, not only for en
gine cooling but
also for proper
generator operation. Check the
condit ion of the belt. Replace
it
if it is worn or frayed. Loosen the
idler
bracket bolts and move the
bracket toward the engine to
remove and replace the belt.
Tighten the belt, whether new or
old, by loosening the idler bracket nuts, prying with a bar on the Checking Fan Bel' Tension
bracket until the belt is tensioned properly, then retighten the
bracket bolts. Proper belt tension is such that, when belt is de
flected downward with moderate thumb pressure at a point midway
between the
generator and fan pulleys, the belt will deflect about
%" to X6". Do not overtighten the belt.
(0) Another cause of engine overheating may be an inoperative
COOLING SYSTEM THERMOSTAT. If the thermostat should fail
i n the closed position, it will not permit
air to circulate through the
engine. See your Authorized Chevrolet Dealer.
