Owner's Manual
Page 293
... 5/8 inch (15 mm) to determine what kind of the filler plug hole. See Recommended Fluids and Lubricants on page 6-4. The proper level for the 2500 and 3500 Series is from 0 to 1/4 (6 mm) below the bottom of lubricant to Check Lubricant To get an accurate reading, the vehicle should be on...
... 5/8 inch (15 mm) to determine what kind of the filler plug hole. See Recommended Fluids and Lubricants on page 6-4. The proper level for the 2500 and 3500 Series is from 0 to 1/4 (6 mm) below the bottom of lubricant to Check Lubricant To get an accurate reading, the vehicle should be on...