Lubrication
Engine
Use High-Grade Oil—Medium Heavy Body or S. A. E. 30
Consult your dealer if you are in doubt as to what
oil to use.
When the ignition switch is turned "on" the red
jewel to the left of the center of the instrument board
should flash red. If it does not, the bulb is either
burned out, the circuit to the oil relief valve broken
or the oil relief plunger sticking.
As soon as the engine is running, the light should
go out. A flash of the red jewel while the engine is
running above idling speed indicates interruption of
the oil supply. The engine should be stopped imme-
diately and the lubrication system inspected.
The amount of oil in the reservoir is shown on the gauge on the instrument panel marked "Gas
or Oil" when the ignition electrolock is turned "on" (turn to left to read gauges without starting
engine) and the button under the instrument panel below the gauge is pressed up.
A bayonet gauge is also provided at the oil filler. See illustration.
The Hudson Duoflo oiling system provides not only purification from dilution but also double
screening and cooling of the oil. The oil is therefore maintained in good condition for a longer
time than in other lubricating systems. Oil should be added as necessary to maintain the quantity
in the reservoir. The reservoir should he drained and refilled with eight (8) quarts of oil at least
every 2500 miles.
It is, however, recommended to drain the initial supply of oil after the first 500 miles of
driving. To drain the reservoir remove the plug from the rear of the oil reservoir. Be sure the
drain plug is tightened securely when replaced.
15
H U D S O N E I G H T
L U B R I C A T I O N
