Page 217 of 340
Checking  Things  Under  the  Hood 
The  following  sections tell you how to  check  fluids, 
lubricants  and  important parts underhood. 
Hood Release 
To open the  hood,  first 
pull  the 
HOOD release 
handle  inside  the 
vehicle.  Then 
go to  the  front of the  vehicle 
and push  the 
secondary  hood release  down  to  lift  the  hood. 
I 
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        Page 218 of 340
        
        
        
     
        
        Page 219 of 340
b b d 
2.3L Quad 4 Engine (CODE D) 
When you open the hood, you’ll see: 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
10. 
Engine  Oil Dipstick 
Automatic  Transaxle Fluid  Dipstick 
(if equipped) 
Brake Fluid  Reservoir 
Air  Cleaner 
Hydraulic  Clutch 
Fluid Reservoir (if equipped) 
Battery 
Windshield Washer Fluid  Reservoir 
Power  Steering  Fluid Reservoir 
Engine  Oil Fill  Cap 
Engine  Coolant  Surge  Tank 
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        Page 220 of 340
P P P 
3.1L V6 Engine (CODE M) 
When you open the hood, you’ll  see: 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
Power  Steering  Fluid Reservoir 
Automatic Transaxle Fluid Dipstick  (if equipped) 
Brake  Fluid Reservoir 
Air  Cleaner 
Battery 
Windshield Washer Fluid  Reservoir 
Engine  Oil Dipstick 
Engine  Oil 
Fill Cap 
Engine Coolant Surge  Tank 
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        Page 221 of 340

Underhood  Light 
Your parking  lights  or headlights  must be on  for the 
underhood  light 
to function when you open the  hood. 
Engine Oil 
If the CHECK OIL  light  on the  instrument  panel comes 
on, it means  you  need  to check  your  engine  oil level 
right  away.  For more  information,  see 
”CHECK OIL 
LIGHT”  in the  Index.  You should  check  your  engine  oil 
level  regularly;  this  is  an  added  reminder. 
It’s  a  good  idea 
to check  your  engine oil every  time you 
get  fuel. 
In order to get  an accurate  reading, the  oil must 
be warm and the  vehicle must be 
on level ground. 
Turn 
off the  engine  and give  the  oil a  few  minutes  to 
drain back  into the oil  pan. If  you  don’t, the  oil  dipstick 
might  not show the  actual  level. 
To Check  Engine  Oil 
Pull out  the  dipstick  and clean it with a paper towel or 
cloth, then push  it  back in all the  way. Remove  it again, 
keeping  the tip  down,  and check  the level. 
Checking Engine Oil 
The  engine oil dipstick  handle  is yellow. The  dipstick 
handle  for  the 
2.3L L-4 is located behind the engine. 
The  dipstick  for  the 3.1L 
V-6 is located  in front of the 
engine  behind the  fan. 
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2.3L Quad 4: Adding  Engine  Oil 3100 V6: Adding  Engine  Oil 
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        Page 223 of 340

When to Add Oil 
If  the  oil  is  at or below  the ADD line, then you’ll  need to 
add  some  oil.  But  you  must  use  the  right  kind.  This  put 
explains  what  kind 
of oil  to  use.  For  crankcase  capacity, 
see  “Capacities  and  Specifications” 
in the  Index. 
I NOTICE: 
Don’t  add  too  much  oil. If your  engine has so 
much  oil  that  the oil level  gets  above  the  upper 
mark  that  shows  the  proper  operating  range, 
your  engine  could  be damaged. 
Just fill it enough  to put the level  somewhere in the 
proper  operating  range. Push the dipstick  all  the  way 
back  in  when  you’re  through. 
What Kind of Oil to Use 
Oils of the proper quality for your  vehicle can be 
identified 
by looking  for  the “Starburst”  symbol.  The 
“Starburst”  symbol  indicates that the 
oil has been 
certified  by the American  Petroleum  Institute 
(API), and 
is  preferred  for use 
in your  gasoline  engine. 
If you change your  own oil, be sure  you use oil that has 
the  “Starburst”  symbol 
on the front of the oil container. 
If you  have your oil changed for you, be sure the  oil  put 
into your  engine is American  Petroleum Institute 
certificd 
for gasoline  engines. 
You  should also  use  the proper  viscosity  oil 
for your 
vehicle, 
as shown in the  following  chart: 
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        Page 224 of 340

RECOMMENDED SAE  VISCOSITY GRADE ENGINE OILS 
FOR BEST  FUEL  ECONOMY  AND  COLD  STARTING,  SELECT  THE  LOWEST 
SAE  VISCOSITY  GRADE 
OIL FOR THE  EXPE( 1 TEMPERATURE  RANGE. 
HOT 
WEATHER 
,- 
I I 
+100-4+38 
i 
I +6O-A+16 
+40--+4 
+20--’-7 
0---I8 
I ~ 
 ,/ 
COLD 
WEATHER 
WOK 
FOR MIS 
SYMBOL 
I 
‘-30 REO 
DO  NOT USE SAE 2OW-50 OR ANY  OTHER 
GRADE OIL NOT  RECOMMENDED 
- 
As shown in the  chart, SAE 5W-30 is best  for your 
vehicle. However,  you can use 
SAE 1OW-30 if  it’s  going 
to be 0°F (- 1 8 “C) or  above.  These  numbers on an oil 
container 
show its viscosity, or thickness. Do not use 
other viscosity  oils, such  as 
SAE 20W-SO. 
NOTICE: 
Use only  engine  oil  with  the  American  Petroleum 
Institute  Certified  For  Gasoline  Engines 
“Starburst”  symbol.  Failure 
to use  the  proper  oil 
can  result  in  engine  damage  not  covered  by  your 
warranty. 
I I 
GM  Goodwrench@  oil (in Canada,  GM Engine Oil) 
meets all the requirements 
for your vehicle. 
Engine Oil  Additives 
Don’t add  anything  to your oil.  Your Oldsmobile retailer 
is  ready 
to advise  if  you think something should be 
added. 
6-14