Cadillac 1937 LaSalle VVI Information page 9

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Gasoline
The LaSalle V-8 engine provides all the benefits of
modern, high-compression design, yet it can be adjusted
readily to use almost any grade of gasoline. As adjusted at
the factory, it will perform satisfactorily with 70-octane
fuel, which is the rating of the so-called "regular" grade of
gasoline marketed by most refiners in the United States.
Some car owners may prefer to use premium grades, of
which "Ethyl" gasoline is the best known. These fuels have
octane ratings well above 70 and, if used with an advanced
spark setting, will permit the engine to develop more power.
Fuels with octane ratings of less than 70 will usually cause
the engine to "knock" or "ping" unless the spark is retarded.
Ignition timing and "ping" are explained on page 52.
The most important thing is to buy your fuel from a
reputable company in order to insure uniform quality and
freedom from impurities that might clog the strainers or
cause harmful chemical action in the engine. Your Author-
ized Cadillac-LaSalle Service Station can advise you regard-
ing the most suitable grades of gasoline available locally, or
adjust your engine for the grade of fuel you prefer to use.
The gasoline tank capacity is 22 gallons.
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Engine Oil
During the first 2,000 miles, the lighter grades of
engine oil must be used. Add S.A.E. 30 in warm weather
and 10 W. in weather below freezing. These lighter grades
are necessary for running-in a new engine.
After 2,000 miles, and every 2,000 miles thereafter—
the crankcase should be drained and refilled with oil of the
correct grade. The grade depends upon the season of the
year and the type of driving, as explained on pages 44 and 45.
In checking the engine oil level between oil changes,
there is only one safe rule: Check the oil level every time
gasoline is purchased and add oil as required. Oil will
not be required every time, but it is better to check the level
unnecessarily a dozen times than to miss the one time that
more oil is needed.
The combination oil
filler cap and plunger
type gauge is on the left
side of the crankcase.
Add oil whenever the
level is down to the 6
quart mark but add only
enough to bring the
levei up to the 7-quart
mark.
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