Hudson 1947 3/4-TON COMMERCIAL, Owner'S Manual, Page: 17 / 75

The first requisite is closely related to the
second factor, in that the oil should have the
ability to flow at low temperatures, to permit
easy starting, and at the same time afford ade-
quate lubrication when the engine reaches nor-
mal operating temperatures. The oil used should
be based on its ability to perform these two
functions at the lowest anticipated temperatures
expected before the next oil change period. See
Fig. 2.
The following table will he helpful in making
this selection :
Use
Use 90° Average temperature S.A.E. 30
Minimum anticipated
temperatures
32°
10°
—10°
Below —10°
kerosene.
Note: Kerosene should be added only when
temperatures below minus 10° are expected for long periods
Your Authorized Hudson Dealer, who has had
long experience with the brands of oils available
in your locality, will be glad to help you with
your lubrication problems
OIL FILTER
A Hudson Oil Filter, see Fig. 3, which aids in
removing foreign matter and impurities under
low pressure, and at the same time maintains a
normal flow of oil through the engine is available
through your Authorized Hudson Dealer. This
filter will keep the oil cleaner for longer periods
and help minimize wear on engine parts.
The cartridge should be replaced every 5,000
to 6,000 miles or whenever the oil shows definite
signs of becoming cloudy. Replacement car-
tridges should be secured from your Authorized
Hudson Dealer
HUDSON OWNER’S MANUAL 15
S.A.E. 20
20 W
10 W
10 W, plus 10%
Figure 3