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Short Drives in Cold Weather-Short drives in cold weather
(freezing
temperatures or lower) such
as
city driving does not permit
the engine to warm up thoroughly, and water may
accumulate
in the
crankcase from condensation of moisture. Under these conditions it
may be advisable to change oil
at
1,000 mile intervals.
High Mileage Driving-For the exceptional person who is operating
his
car
500 to 1,000 miles per week and using
oils
marked "For Serv-
ice
MM"
or
"
For Service MS or
DG",
consideration may be given
to greater mileage between oil changes. Oils have a tendency to thicken
on continuous high-speed driving. This should be kept in mind when
preparing cars for cold weather driving.
ADDING OIL BETWEEN CHANGES-Since
the lubrication
system
in a Pontiac is a full pres-
sure system, it is not necessary to keep oil level
up to the
"FULL"
mark on the dipstick. It is
only necessary to keep oil level above the "ADD
OIL" mark. It takes two quarts to bring the oil
level from "ADD OIL" to
"FULL"
mark. Each
time the gas tank is filled, the oil level should be
checked.
However, it is good economy to let the
oil level approach the "ADD OIL" mark before
having your oil changed. (Always be sure the oil
level is up to the
"FULL"
mark before statting
out on a trip.)
OIL CLEANER:-A precipitation type oil cleaner is built into the
crankcase of the Pontiac engine to prolong the life of the
en~ine
.
.
There is no filter element to replace; however, the sediment bowl and
screen of the oil cleaner can be removed for cleaning.
All the oil passes through the cleaner before reaching the oil pump
and other working parts. This permits very effective removal of
particles of grit and metal from the oil that are harmful to bearings.
The Pontiac oil cleaner will not clarify oil by removing discoloration
formed chemically within the oil itself, and which experience has
shown is not har~ful to bearings Or other moving parts.
EXTERNAL OIL CLEANER-External type oil filters or cleaners
are not necessary or desirable on Pontiac cars and no provision has
been made for their installation.
( 391
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