Owner's Manual
Page 353
...To get an accurate reading, the vehicle should be on page 6-16. See Part D: Recommended Fluids and Lubricants on a level surface. 5-50 When the differential is cold, add enough lubricant to raise the level to 1/2 inch (12 mm) below the bottom of the filler plug hole. What to Use Refer ... Maintenance Schedule to determine what kind of lubricant to the bottom of the filler plug hole, you may need to add some lubricant. When the differential is at operating temperature (warm), add enough lubricant to raise the level to use. How to Check Lubricant If the level is below the filler...
...To get an accurate reading, the vehicle should be on page 6-16. See Part D: Recommended Fluids and Lubricants on a level surface. 5-50 When the differential is cold, add enough lubricant to raise the level to 1/2 inch (12 mm) below the bottom of the filler plug hole. What to Use Refer ... Maintenance Schedule to determine what kind of lubricant to the bottom of the filler plug hole, you may need to add some lubricant. When the differential is at operating temperature (warm), add enough lubricant to raise the level to use. How to Check Lubricant If the level is below the filler...