2001 Rear Diffy - WTF?

[dmauldin]

Changing the gear oil in rear differential for the first time since I've owned it. I've put on 2k of the 205,000 miles. Have already poured 3qts of 75W-90 in and still not flowing from the fill hole...
If my research is right, it should hold 2.5qts.
2001 Limited 2WD

Any idea what's going on?

 

[soundmanlpte]

Changing the gear oil in rear differential for the first time since I've owned it. I've put on 2k of the 205,000 miles. Have already poured 3qts of 75W-90 in and still not flowing from the fill hole...
If my research is right, it should hold 2.5qts.
2001 Limited 2WD

Any idea what's going on?

I think it's actually 2.8 or 2.9 quarts or something. When I did mine I put in a little over 3 quarts. Stick your finger in the fill hole and see if you can tell how close you are. I wonder if some of the parts get worn down over time and thus you can fit more fluid in.

 

[StreetCreeper]

This may sound dumb, but are you on flat ground?

 

[OkiSurf1996]

This may sound dumb, but are you on flat ground?

Probably on flat ground with the rear end jacked up to get under it.

 

[soundmanlpte]

Probably on flat ground with the rear end jacked up to get under it.

I did mine on the ground. You don't need to jack it up to reach it. I'm a small guy though.

 

[OkiSurf1996]

I did mine on the ground. You don't need to jack it up to reach it. I'm a small guy though.

You don't, but most people don't realize that.

 

[dmauldin]

It's flat on the ground, in the garage with the spare tire removed. I'm a tall, skinny guy, so I can get all the way to the middle of the vehicle without lifting it.

I did stick my pinky in and I'm 99% certain the oil is right up to the bottom of the fill hole, so I'm calling it a day and reinstalling the fill plug (and new crush washer).

It has 3 full quart bottle, minus whatever small amount I couldn't get to squeeze out at that angle...

Thanks for the replies!