Owner's Manual
Page 274
... Series, the proper level is from 5/8 inch (15 mm) to 1/4 (6 mm) below the bottom of the filler plug hole. The proper level for the 2500 and 3500 Series is from 0 to 1 5/8 inch (40 mm) below the bottom of the filler plug hole. See Scheduled Maintenance on page 6-13. How...
... Series, the proper level is from 5/8 inch (15 mm) to 1/4 (6 mm) below the bottom of the filler plug hole. The proper level for the 2500 and 3500 Series is from 0 to 1 5/8 inch (40 mm) below the bottom of the filler plug hole. See Scheduled Maintenance on page 6-13. How...