Differential fluid level on new hybrid 3.55 locking axle

[oldschool]

Hello all,
I bought a new hybrid 2wd a couple of days ago. Today I have been looking over all of the accessories and checking basic fluid levels, battery connectors, tire pressures, lug nut torques, and several other things I want to be correct on my latest new truck. Sometimes a stitch in time saves 9....37......or 892.

I opened the fill plug on the diff and expected that oil might spill out from being completely filled at the factory. I found that the level is approx 1/2 to 5/8
inch below the bottom of the fill hole. I have seen that this is normal on some autos but I'm not sure on this one. I plan to buy the service cd and wiring diagrams
from Helm publishers but that would take a few days to get here.

Does anyone have service literature or happen to know if this fill level is ok?

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[Jus Cruisin]

A call to your dealer could probably answer that.

 

[Bryan Simon]

I would venture to guess that these are filled by weight, metered from a bulk source.
They may also be filled with the differential oriented to prevent spillage.
All of the rear assemblies most likely use the same volume/weight for a “full” fill.
I have always maintained that if you can stick your pinky in that hole and touch oil, it is fine.
Different gear ratios will displace different amounts of fluid due to the thickness of the different gearsets
The fill hole will keep you from overfilling as most people (me too) fill til it starts coming out.

 

[oldschool]

I would venture to guess that these are filled by weight, metered from a bulk source.
They may also be filled with the differential oriented to prevent spillage.
All of the rear assemblies most likely use the same volume/weight for a “full” fill.
I have always maintained that if you can stick your pinky in that hole and touch oil, it is fine.
Different gear ratios will displace different amounts of fluid due to the thickness of the different gearsets
The fill hole will keep you from overfilling as most people (me too) fill til it starts coming out.

Thanks for

I would venture to guess that these are filled by weight, metered from a bulk source.
They may also be filled with the differential oriented to prevent spillage.
All of the rear assemblies most likely use the same volume/weight for a “full” fill.
I have always maintained that if you can stick your pinky in that hole and touch oil, it is fine.
Different gear ratios will displace different amounts of fluid due to the thickness of the different gearsets
The fill hole will keep you from overfilling as most people (me too) fill til it starts coming out. [/QUOTAS]
Thanks for your reply. I was unable to get my finger low enough to touch the oil. I bent a zip tie and was able to measure how low the fluid was. There was barely any clearance to the gear set from the hole, (maybe 5/16 in). If any one measures their diff, let me know results.

 

[oldschool]

OoPS, my bad. Starting over again,
Thanks for your reply. I was unable to reach fluid level with my finger. There was only about 5/16
in. clearance from gearset to case. I determined level by using a bent zip tie. If anyone checks their fluid, let me know what you find.

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