Buick LeSabre 1965 Service Manual page 22

MAINTENANCE
1-11
conforming to Buick Specification
No. 723. It is not necessary to
remove the lubricant at any time
except when it has become con-
taminated or when it is required
for inspection of parts or for
repairs. There is no drain hole
in the rear axle housing.
In all cases of adding lubricant to
bring to proper level or complete
r e f i l l i n g of Positive Traction
Rear Axle, only lubricant con-
forming to Buick Specification No.
723 should be used. Lubricant
conforming to this specification
may be obtained from any Buick
Parts Warehouse under Group
5.535.
To identify a Positive Traction
rear axle, a tag stating "Use
Limited Slip Diff. Lube Only",
is attached to the filler plug of
the rear axle on Wildcats, Electra
225's and Rivieras. On LeSabres
this same tag is attached to the
lower right bolt on the rear axle
rear cover. See Figure 1-10.
1 - 1 0 VEHICLE OPERATION
UNDER DUSTY
CONDITIONS
When cars are operated in ad-
verse dusty climates or condi-
tions, the following ^precautions
should be taken to prevent dirt
and other foreign materials from
entering the engine.
a. Change Engine Oil - Change
more often than is recommended
in Par. 1-1. The severity of the
conditions should determine the
frequency of oil changes.
b- Oil Filter - Change each time
that the oil is changed under these
conditions.
c. Oil Filler Cap - Check for
presence of dust and dirt each
time car is refueled. Wash and
re-oil if necessary.
d. Air C l e a n e r E l e m e n t - If
amount of dirt and foreign ma-
terials is excessive, e l e m e n t
should be replaced on Super Wild-
cat engines and cleaned on all
other engines.