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13
SecUon I
LUBRICATIC>N
Al'lD
MAINTENANCE
1. IMPORTANCE OF LUBRICATION
AND MAINTENANCE.
Under extreme conditions of heat, cold
and dust, the Plymouth car has proven
itself to be dependable and worthy of the
slogan "Plymouth Builds Great Cars."
Much of the credit for Plymouth's de-
pendability goes to the men who do the
lubrication and maintenance work neces-
sary to keep Plymouth cars in good operat-
ing condition. Periodical lubrication and
maintenance combat the effects of heat,
water and abrasive dirt which destroy the
smooth bearing surfaces of moving parts.
The use of the right type and quantity of
lubricant is an important factor in extending
the useful life of a car.
All Plymouth cars are equipped with
adequate lubrication facilities designed to
protect vital parts. To keep the car in con-
dition to render uninterrupted service, each
point of lubrication requires attention at the
frequencies recommended in this manual.
Neglect and the use of improper lubricants
result in wear, noisy operation and ultimate
failure of parts. Good care and periodical
lubrication result in quiet, trouble-free serv-
ice and thousands of extra miles of good
service.
2. ENGINE OIL RECOMMENDATIONS.
193642
( 1 )
The recommendations shown on
the "Table of Capacities, Frequencies and
Lubricants" are based upon the principle
that the lower viscosity oils circulate more
rapidly and lubricate parts with closer clear-
ances more readily than heavier oils. Com-
plete satisfaction, however, depends upon
the use of only well refined, high quality
products.
IMPORTANT
The frequencies recommended on
the following pages for lubrica-
tion services are intended for nor-
mal service. If the car is operated
under extreme conditions of heat,
water, dust, sand, mud or snow or
over rough gravel or dirt roads,
lubricate at more frequent inter-
vals than recommended. Such
conditions may warrant lubrica-
tion attention as often as once a
day, and the frequency should be
governed by conditions encoun-
tered.
( 2)
For cars of comparatively low
mileage, SAE 20 or No. 20-W Engine Oil is
recommended as a general summer oil.
Either grade may be used in tropical cli-
mates during the winter months or No. 20-W ·
Engine Oil may be used in localities where
only very mild winter conditions prevail,
such as territories where temperatures never
go below lOoF above zero. If, however, as
a result of contit:ued high speed driving or
other causes, oil consumption becomes a
factor, SAE 30 Engine Oil may be used for
temperatures above 32°F above zero.
(3)
No. 10-W Engine Oil is recom-
mended as a general winter oil for tempera-
tures as low as 10°F below zero, but not
lower. However, should atmospheric tem-
peratures rise above +32°F during winter,
No. 10-W Engine Oil is satisfactory, and a
change is not necessary until the next mile-
age period. No. 10-W Engine Oil may also
be used during summer, if desired, provided
driving habits are moderate.
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