Ford 2003 Ranger Owner's Manual page 197

6. Wipe the indicator clean. Insert the indicator fully, then remove it
again.
• If the oil level is between the MIN and MAX marks, the oil level is
acceptable, DO NOT ADD OIL.
• If the oil level is below the MIN mark, add enough oil to raise the level
within the MIN-MAX range.
• 2.3L I4 engine
• 3.0L V6 engine
Maintenance and Specifications
197