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06-05-2020, 11:20 AM
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#1 |
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Senior Member
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,761
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T/C fluid
Just wanted to check what fluid you are using to fill up your transfer case? I have some ATF laying around and it would be nice to get rid of it
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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06-05-2020, 12:55 PM
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#2 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: T/C fluid
Assuming it's a 205, I have read most gear oils will work including ATF. Mine ran for years with ATF but anymore I use Mobil One synthetic 75W-90.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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06-05-2020, 01:46 PM
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#3 |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,761
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Re: T/C fluid
good point, yes it is a 205, figured that ATF would work, since a seal leaks and ends up in the T/C, just gotta check your trans fluid for low level
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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06-05-2020, 02:37 PM
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#4 |
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Registered User
Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 3,051
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Re: T/C fluid
synthetic gear lube, 75w90
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'51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com |
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06-05-2020, 04:19 PM
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#5 | |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: T/C fluid
Quote:
 That's exactly what I dealt with for years! Transmission would slip due to low fluid -- top it off, and drain the excess from the transfer case!
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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06-05-2020, 04:33 PM
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#6 |
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All about them K’s
 
Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,487
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Re: T/C fluid
80/90 Dino gear oil in mine, sm465 and np205 both
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s |
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06-05-2020, 04:36 PM
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#7 |
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Registered User
Join Date: Jul 2012
Location: Whitehorse yukon
Posts: 1,218
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Re: T/C fluid
80 90 gear oil is what is recomended for our trucks
Atf is used in newer trucks with much smaller bearing sm 265 205 tcase have large course ball bearings |
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06-05-2020, 06:06 PM
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#8 |
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Registered User
Join Date: Dec 1999
Location: Mid NE USA
Posts: 2,212
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Re: T/C fluid
I am running ATF. The same as the TH350.
No problems Ron
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Member #111 68 C-10  Daily Driver70  4x4 Project76 Jeep CJ-5 Help Support the Board: http://67-72chevytrucks.com/vboard/payments.php He who knows nothing is closer to the truth than he whose mind is filled with falsehoods and errors. Thomas Jefferson |
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06-05-2020, 06:54 PM
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#9 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: T/C fluid
Couple old threads if you're interested..... and there are more, just search.
 http://67-72chevytrucks.com/vboard/s...d.php?t=278680 https://67-72chevytrucks.com/vboard/...d.php?t=559120
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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06-06-2020, 10:47 AM
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#10 | |
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Proprietor of Dale's Corner
Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,245
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Re: T/C fluid
Quote:
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man R.I.P. FleetsidePaul |
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06-06-2020, 11:21 AM
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#11 |
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Senior Member
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,761
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Re: T/C fluid
well, let me give you alittle back story, when it was in the shop for the EFI, I asked how much tranny fluid goes in he said"6-7 quarts" so I put it in, my tranny leaked for a couple months, kinda caught most of it, so now I have a pan with about 6 quarts laying here, bright idea!!!!, lets put it into the t/c, It wont get spilled in my shop,and I can CYA when my son asks, what is in that pan, he doesn't come on this forum (jeep guy). so that why I asked
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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