- Joined
- Oct 26, 2022
- Messages
- 44
2004 Chevy Silverado 1500 with the 8.25 ring gear front axle, does anyone know the proper fill level for it? I’ve seen three different fill levels.
1) 12-16 mm (0.50-0.625 in) below the fill plug,
2) When the differential is cold, add enough lubricant to raise the level to 1/2 inch (12 mm) below the filler plug hole. When the differential is at operating temperature
(warm) add enough lubricant to raise the
level to the bottom of the filler plug hole.
3) If the level is below the bottom of the filler plug hole located on the front axle, you may need to add some lubricant:
When the differential is cold add enough lubricant to raise the level to 0 to 3/8 inch (9.5 mm) below the filler plug hole.
When the differential is at operating temperature (warm), add enougn lubricant to raise the level to the bottom of the filler plug hole.
My owners manual doesn’t have this info so I googled around and found those from different year gmt800 owners manuals and various forums with info from gm. I then looked up my owners manual on chevys website just to see if they updated it or mine was a misprint and number three was what it said. I understand they are all similar and probably close enough but I’d like the actual specification.
1) 12-16 mm (0.50-0.625 in) below the fill plug,
2) When the differential is cold, add enough lubricant to raise the level to 1/2 inch (12 mm) below the filler plug hole. When the differential is at operating temperature
(warm) add enough lubricant to raise the
level to the bottom of the filler plug hole.
3) If the level is below the bottom of the filler plug hole located on the front axle, you may need to add some lubricant:
When the differential is cold add enough lubricant to raise the level to 0 to 3/8 inch (9.5 mm) below the filler plug hole.
When the differential is at operating temperature (warm), add enougn lubricant to raise the level to the bottom of the filler plug hole.
My owners manual doesn’t have this info so I googled around and found those from different year gmt800 owners manuals and various forums with info from gm. I then looked up my owners manual on chevys website just to see if they updated it or mine was a misprint and number three was what it said. I understand they are all similar and probably close enough but I’d like the actual specification.