Owner's Manual
Page 434
If the level is below the bottom of the filler plug hole, you may need to add some lubricant. 1'Vhen the differential is at operating temperature (warm), add enough lubricant to raise the level to 3/8 inch (9.5 mm) below the filler plug hole. How to Check Lubricant What ...to Use Refer to the Maintenance Schedule to determine what kind of the filler plug hole. When the differential is cold, add enough lubricant to raise the level to 0 to the bottom of lubricant to check the lubricant. See Part D: Recommended Fluids and Lubricants...
If the level is below the bottom of the filler plug hole, you may need to add some lubricant. 1'Vhen the differential is at operating temperature (warm), add enough lubricant to raise the level to 3/8 inch (9.5 mm) below the filler plug hole. How to Check Lubricant What ...to Use Refer to the Maintenance Schedule to determine what kind of the filler plug hole. When the differential is cold, add enough lubricant to raise the level to 0 to the bottom of lubricant to check the lubricant. See Part D: Recommended Fluids and Lubricants...