Chevrolet 1965 CORVAIR Owner's Manual page 36

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.