Mercury Mountaineer 2001 Owner's Manual page 202

Maintenance and care
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level indicator (dipstick).
4.0L V6 engine
5.0L V8 engine
202
MIN
MIN
MAX
MAX