Oldsmobile 1998 Aurora Owner's Manual page 262

4.0L Engine
When you open the hood, you'll see:
A. Remote Positive
(+)
Battery Terminal
B. Windshield Washer
fluid Reservoir
C. Power Steering Fluid Reservoir G. Automatic Transaxle Fluid
D. Engine Oil Fill Cap
Dipstick (behind air cleaner)
E. Engine Oil Dipstick
H. Engine Coolant Surge Tank
E Brake Fluid Reservoir
I. Air Cleaner