Chevrolet Light - Page 75

110
ro
90 SAE 3
80
70
60
so
SAE 20
30
20
S.A.E.10-W oil plus 10% kerosene
is recommended only for those t er-
ritories where the temperature falls
below 10 degrees below Zero for
protracted periods.
Figure 80 shows the data in the
above table as it would appear on a
thermometer - the lowest tempera-
ture at which the indicated grades
of oil will permit easy starting.
NOTE: When in doubt use the
lighter grade of oil.
We ret:ommend the use of S.A~E.
20-W rather than S.A.E. 20 if you
anticipate temperatures to drop to
freezing.
Summer. The use of S.A.E. 20- W or
S.A.E. 20 oils during the summer
months will permit better all around
performance than will the heavier
body oils, with no appreciable in-
crease in oil consumptio n.
If S.A.E. 20 or S.A.E. 20-W oil is not
available, S.A.E. 30 oil may be used
if it is expected that the average
prevailing daylight temperature will
Fig. 8a-ou n",mom.' ., consistently be above 90° F.
Maintaining Oil Level. The Oil
Gauge Rod (fig. 81) is marked
"Full" and "Add Oil." The se nota-
tions have broad arrows pointing to
the level lines.
The oil level should be maintained
between the two lines ; neither going
above the "Full" line nor under the
"Add Oil" line.
Check the oil level frequeI'ltly and
add 'oil when necessary. Always be
sure the crankcase is full before
s tarting on a long drive.
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