Hudson 481 Series, Owner'S Manual

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The level should be checked each time
fuel is added. The oil level gauge is
located on the left side of the engine and
is divided at its lower end to show the
"Oil Level Range" and the "Low Range".
For normal operation, the oil level is sat-
isfactory when it is within the "Oil Level
Range". For high speed operation, the level
should be maintained at the full mark,
which is the top line on the "Oil Level
Range".
To make an accurate check, it is best to
wait a minute or two after shutting off the
engine to permit the oil to drain back into
the reservoir. Approximately three and
one-half quarts of oil are required to
bring the level from low to full in both
six and eight cylinder engines. If the level happens to be low and the speedometer
indicates that the oil change period is near at hand, it is more economical to have the oil
changed at that time.
WHEN TO CHANGE ENGINE OIL
The oil which is placed in the engine at the factory is satisfactory for the first 500 miles
of operation.
Thereafter, at intervals of 2,000 miles, the reservoir should be drained and refilled
with new oil of good quality. If the car is operated constantly in dusty areas or for
short distances at low speeds during cold weather, which permits foreign matter and
sludge to accumulate, it should be changed more frequently. However, the actual
change period is largely dependent on the individual driving circumstances.
The oil is drained by removing the plug at the rear of the oil reservoir. To insure
complete draining, it is important that the operation be performed while the engine is
warm.
It is good practice to remove the oil reservoir at least twice a year, preferably in the
spring and fall, to permit thorough cleaning of the screens and pan.
Caution: The use of flushing oil or compounds is not recommended. However, in the event
they are used, it will be necessary to remove the oil reservoir and thoroughly clean it out
before installing the new oil.
THE PROPER ENGINE OIL TO USE
The use of high-grade engine oil of the correct type is of great importance in
obtaining maximum performance and satisfaction from your car. Select oils from
well-known and dependable brands, of which there are many on the market, and of the
proper viscosity to suit your seasonal and driving requirements.
14 HUDSON OWNER MANUAL