Advertisement
1-8
LUBRICARE
LUBRICARE AND BEARING SERVICE
(16)
SECTION l-B
OTHER LUBRICARE INSTRUCTIONS
CONTENTS OF SECTJON 1-8
Paragraph
Subject
Page
1-7
Changing Engine Oil.
.
.
. . .
.
. .
.
.
1-8
1-8
Engine Oil Recommendations
.
..
1-8
Paragraph
Subject
Page
1-9
Draining, Flushing,
R
efilling
Rear Axle
. .
.
.
.
.
. . .
.
.
.
.
.
.
. . . .
.
1-9
1-10
Non-Periodic Lubricare
I
ns t ruc-
tions
. . .
.
.
.
. .
. . . .
.
.
. . .
.
.
. . .
.
.
.
1-9
Bulletin No.
Page Na.
SERVICE BULLETIN REFERENCE
SUBJECT
1-7 CHANGING ENGINE OIL
a. When to Change Engine Oil
Under
normal
driving
condit ions when the
car is operated at st a biliz ed temperatures most
of the
time,
such as on long trips, and there is
reasonable freedom
from
dust or other con-
taminating
conditions,
draining
and filling with
fresh oil
every
2000 to 3000 miles is recom-
mended.
Under light
driving
conditi ons when frequent
starts and stops do not
let
the engine oil reach
a stabilized
temperature,
particularly in cold
weather, it is
necessary t
o
change
oil more fre-
quently to compensate
for
dilution and sludge
formation. It is
necessary
to change oil more
frequently
when the car is habitually operated
on dusty roads. Bad dilution or dust conditions
may require draining and refilling as often as
every 500
miles.
It is necessary to change engine oil when-
ever it becomes contaminated with
harmful
materials.
The following conditions cause con-
tamination of engine
oil and shorten
its useful
life:
1.
Short runs
with a cold engine,
particu-
larly in extremely cold
weathe r,
in
cr ease "
dil u-
tion" and water condensation in crankcase.
2.
Hard driving causes oil to oxidize more
rapidly. When fresh oil is
added,
oxidized oil
will deposit "granular carbon" and "varnish"
on internal engine parts.
3. Dusty road
s
or
dust
storms cause con-
tamination of engine oil
even
though the cr a n k-
case is protected
by
filters.
b.Crankcase Flushing
Flushing
the
crankca se with
oils or
solutions
other than a
good
winter
grade
(1
0-W)
engine
oil is not
recommended. Use 3
quar t s of 10-W
oil (4
qts,
if oil filt er
is dr ai n ed ) a
nd
id
le
t
he
engine at 1000 RPM (equivalent
to 20
MPH)
until the oil is hot,
then drain immediately a
nd
fill with correct
seasonal grade
of eng ine oil.
1-8
ENGINE OIL RECOMMENDATIONS
a. Choice of Oil
1.
Regular Type Motor Oil.
This term des-
ignates motor oil generally suitable for use in
internal combustion engines under
modera te
operating conditions .
2.
Premium Type Motor
Oil.
This
term
designates motor
oil having the
oxidation sta-
bility
a
nd bea r ing corrosion
preventive p
rop-
erties
necessary to make it
generally suit a ble
f
or
use in internal com
bustion engines
where
operating conditions
are m
or e
severe
than reg-
ular
duty.
Under normal dr iving condi t ions where the
engine
is r
equired
to de
velop greater
power for
a greater pe
rcentage
of the t
im e the Premiu m
Type Motor
Oils
are
recommended.
Advertisement
