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#4524907 - 09/24/17 02:23 PM Diff and TC fluid capacity, expansion question
LeakySeals Offline


Registered: 02/18/11
Posts: 6624
Loc: Hudson, NH
Per the manual for my 2006 Escalade:

The front and back diff fluid should be approx 5/8" below the filler plug hole.

The Transfer case should be filled with "enough lubricant to raise the level
to the bottom of the filler plug hole".

So thats what I did. Today I decided to check levels of all 3 hot. The diffs remained in spec, but the transfer case literally squirted hot Dex III out of the filler plug hole. When it slowed I put the plug back in and measured what came out. Approx 5 ounces. Should I refill after it cools down? Or am I better off on the low side for the diffs and TC so there's no aeration in the fluids? Does ATF expand more than other fluids like motor oil and gear fluid?
_________________________
06 Escalade 6.0L AWD 160k. M1 5w30 Fram TG
03 Maxima 3.5L 152k ST HM 10w30

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#4524926 - 09/24/17 02:48 PM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17911
Loc: PNW
Fill them to what the manual says when cold ... then don't mess with them when hot because the fluids will expand when hot.

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#4525027 - 09/24/17 05:00 PM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
barkingspider Offline


Registered: 12/22/13
Posts: 2064
Loc: socal
On my escalade transfer case, I drain and fill when cold and call it a day.
_________________________
06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
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#4525051 - 09/24/17 05:25 PM Re: Diff and TC fluid capacity, expansion question [Re: barkingspider]
LeakySeals Offline


Registered: 02/18/11
Posts: 6624
Loc: Hudson, NH
Originally Posted By: barkingspider
On my escalade transfer case, I drain and fill when cold and call it a day.

What I had been doing also. But it was significantly higher hot. Its ATF, Im thinking maybe it should be measured like the transmission. Not running but expanded hot. Nothing in manual about expansion
_________________________
06 Escalade 6.0L AWD 160k. M1 5w30 Fram TG
03 Maxima 3.5L 152k ST HM 10w30

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#4525146 - 09/24/17 07:11 PM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
clinebarger Offline


Registered: 12/19/13
Posts: 1988
Loc: Fort Worth, Texas
You check & fill the T-Case cold.
_________________________
2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/Auto

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#4525221 - 09/24/17 08:51 PM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
Rand Offline


Registered: 08/20/03
Posts: 12728
Loc: NE,Ohio
Originally Posted By: LeakySeals
Per the manual for my 2006 Escalade:

The front and back diff fluid should be approx 5/8" below the filler plug hole.

The Transfer case should be filled with "enough lubricant to raise the level
to the bottom of the filler plug hole".

So thats what I did. Today I decided to check levels of all 3 hot. The diffs remained in spec, but the transfer case literally squirted hot Dex III out of the filler plug hole. When it slowed I put the plug back in and measured what came out. Approx 5 ounces. Should I refill after it cools down? Or am I better off on the low side for the diffs and TC so there's no aeration in the fluids? Does ATF expand more than other fluids like motor oil and gear fluid?


yes only fill/measure T-case/manual transmissions that spec ATF when cold unless otherwise specified.
_________________________
2019 Jeep Cherokee Trailhawk 2.0T

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#4525252 - 09/24/17 09:16 PM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
zeng Offline


Registered: 09/01/15
Posts: 2199
Loc: Malaysia
Originally Posted By: LeakySeals
... Or am I better off on the low side for the diffs and TC so there's no aeration in the fluids

I know where you are coming from, but the worry on aeration is invalid.
As others said, check at cold.


Edited by zeng (09/24/17 09:16 PM)

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#4525499 - 09/25/17 08:02 AM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
Ammofirst Offline


Registered: 06/22/17
Posts: 353
Loc: Western usa
Is That 06 Escalade The full time 4wd model ?

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#4525529 - 09/25/17 08:37 AM Re: Diff and TC fluid capacity, expansion question [Re: Ammofirst]
LeakySeals Offline


Registered: 02/18/11
Posts: 6624
Loc: Hudson, NH
Originally Posted By: Ammofirst
Is That 06 Escalade The full time 4wd model ?

Yes, its AWD with a BW4481 transfer case. Can't turn it off..
_________________________
06 Escalade 6.0L AWD 160k. M1 5w30 Fram TG
03 Maxima 3.5L 152k ST HM 10w30

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#4525630 - 09/25/17 10:06 AM Re: Diff and TC fluid capacity, expansion question [Re: LeakySeals]
Ammofirst Offline


Registered: 06/22/17
Posts: 353
Loc: Western usa
I need to service my moms 2012 Escalade Diffs and t-case. I'm wondering which fluids to use ? This SUV has the full time AWD as well.


Edited by Ammofirst (09/25/17 10:07 AM)

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