SERVICE· AND MAINTENANCE
5-3
temperature weather conditions require
high~r
viscosity engine oils for
satisfactory lubrication.
The
oil viscosity
chart
lists the engine oil
viscosities that will provide the best balance
of
fuel economy, engine life,
and
oil
economy.
us E T H
ES
E S
AE
V ,scos, T Y G I A DES
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:2DW·20.
20W40
, 20W·
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M
F I , I ! I ,
TEMPERATURE
RANGE
YOU
EXPECT
BEFORE
NEXT
OIL
CHANGE
100
'.
40
NOTICE
:
00
NOT
USE
SAE
5W
·
20
OILS
FOR
CONTINUOUS
HIGH·SPEED
DRIVING.
CHECKING OIL LEVEL
It
isthe
owner's responsibility to keep the engine oil
at
the proper level.
The oil level should be checked
at
regular intervals (such as every other
fuel stop) and maintained above the
"Add"
line. Keep
in
mind your
engine may use more oil when it
is
new.
• The best time to check the e'ngine oil level
is
when the oil
is
warm,
such as during a fuel stop. First, allow about 5 minutes for the oil to
drain back to the oil pan. Then pull the dipstick out, wipe
itclean,
and push it back down all the way. Now pull the dipstick out and
look
at
the
oil
level on the dipstick. Some dipsticks have
"Add"
and
"Full
" line
s.
Others are marked
"Add
I
Qt"
and
"Operating
Range." In all cases, keep the oil level above the
"Add"
line. Push
the dipstick back down all the way after taking the reading. Add oil
if needed .
•
If
you check the oil level when oil
is
cold, do not run the engine first.
The cold oil will not drain back
tothe
pan fast enough to give a true
oil level.
Engine
Oil
Additives
There are many extra engine oil helpers or additives for sale. Your engine
should not need these extra additives
if
you use SE-quality engine oil and
change it as suggested.
If
you think your engine has an oil related
problem,
talk
to your Pontiac dealer.
If
needed, your dealer can provide
you with a tested
and
approved oil additive called
"G
M Engine Oil
Supplement."
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