Mazda 2002 B2300 Owner's Manual page 240

Maintenance and Specifications
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
240