Transfer case oil or fluid? - FSB Forums
Register Home Forums Active Topics Photo Gallery All Albums Mark Forums Read Auto EscrowInsurance FSB Store
FullsizeBronco.com is the premier Ford Bronco Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 02-26-2011, 08:16 PM   #1
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
Transfer case oil or fluid?

I probably didn't search correctly since I'm surprised I couldn't find a definitive answer, but here goes......

What fluid or oil does my 79 transfer case take? It's the one with the shifter like this:
low lock
low
n
high
high lock

The Haynes manual says 140w, but that that seems way thick. Funny thing is it appears to have auto tranny fluid in it!!!!

Thanks for the help and feel free to rip me a new one if I missed the obvious answer somewhere.

Tyler
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-26-2011, 08:43 PM   #2
colobronco
Registered User
 
colobronco's Avatar
 
Join Date: Feb 2008
Location: Wheat Ridge CO
Posts: 1,170
iTrader: (0)
Bronco Info: 79 Ranger XLT 400CID C6 2" Lift on 33's
Someone has put the lovely NP203 into your Bronco. Full time 4 wheel drive.

It uses 80W-90 gear lube.
__________________
Quote:
Originally Posted by InfoFord View Post
if you still can't figure it out put it back together and take it to a mechanic
"Under my plan electricity prices would necessarily skyrocket" BHO

Truck was stolen & sold for parts Wheat Ridge Colo Black with Red 2 tone. About $20K in the truck. VIN U15HLEC0170
colobronco is offline   Reply With Quote
Old 02-26-2011, 09:01 PM   #3
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
Quote:
Originally Posted by colobronco View Post
Someone has put the lovely NP203 into your Bronco. Full time 4 wheel drive.

It uses 80W-90 gear lube.
Thanks. That 's what I ended up putting in there. 140 seemed crazy heavy to me.

I think this t-case was one of the option in 79??????
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Old 02-26-2011, 10:06 PM   #4
John in AZ
Registered User
 
Join Date: Jan 2011
Posts: 97
iTrader: (0)
I believe the 203 should have straight 30 weight oil in it.
John in AZ is offline   Reply With Quote
Old 02-26-2011, 10:10 PM   #5
redbeast9
Registered User
 
Join Date: Oct 2006
Location: NORTH ALABAMA
Posts: 3,777
iTrader: (10)
Bronco Info: 80 BRONCO 400 NP435 NP205 Detroits , SAS, 5'' lift on 36'' TSL's
Use to have a rig with a NP203 and used 80-90 dope with never a problem.
redbeast9 is offline   Reply With Quote
Old 02-26-2011, 10:46 PM   #6
magnumpi
Wrenching for a Livin'
 
magnumpi's Avatar
 
Join Date: Jan 2004
Location: Sherrills Ford, NC
Posts: 6,988
iTrader: (20)
Bronco Info: '85 Ford Bronco XLT.
Theres no oil pump IIRC. its just splash lube. The weight isnt critical....heck the type of fluid isn't that critical. 80w90 or 75w90 would be a good choice because of its avaliability. 530w engine oil would be fine too. I think thats what was in it from ford.

And the np203 was a factory option in the 78-79 ford. You don't have lockout hubs in the frontend do you?
__________________
My SuperFord
'85 Bronco......
Welded 14 bolt, HPKingpin D60 w/ lockright, ZF5, NP205, 4.88 gears, SMPFI 393 w/ EDIS(gufx strat), Chevy 52s Front, Inboarded Chevy 63s Rear, DOM heim steering, DOM cage, Saginaw pump, 3/8" fuel system, 200amp 3G Alternator....

ASE Master Automotive Technician
ASE Master Medium/Heavy Truck Technician
magnumpi is offline   Reply With Quote
Old 02-26-2011, 10:49 PM   #7
John in AZ
Registered User
 
Join Date: Jan 2011
Posts: 97
iTrader: (0)
only read this yesterday was why I remembered. Here is the link from the thread I read & a quick search
30wt motor oil speced from new process.
http://www.ford-trucks.com/forums/43...-capacity.html
http://www.google.com/search?q=np203...rchBox&ie=&oe=
John in AZ is offline   Reply With Quote
Old 02-27-2011, 01:19 AM   #8
Smok3y
FSB's Dirty Jersian
 
Smok3y's Avatar
 
Join Date: Nov 2009
Location: South Jersey
Posts: 3,571
iTrader: (0)
Bronco Info: 89 Eddie Bauer + 79 F250 Ranger Lariat
Quote:
Originally Posted by 69SCJ View Post
I probably didn't search correctly since I'm surprised I couldn't find a definitive answer, but here goes......

What fluid or oil does my 79 transfer case take? It's the one with the shifter like this:
low lock
low
n
high
high lock

The Haynes manual says 140w, but that that seems way thick. Funny thing is it appears to have auto tranny fluid in it!!!!

Thanks for the help and feel free to rip me a new one if I missed the obvious answer somewhere.

Tyler
140w is a pretty heavy oil. I'd go with a little bit lighter. straight 90 weight is perfect. I've been using 90 weight since I've owned my 250 and per new standars I believe 80-90 is what manufacturer calls for now.

Quote:
Originally Posted by colobronco View Post
Someone has put the lovely NP203 into your Bronco. Full time 4 wheel drive.

It uses 80W-90 gear lube.
:

Quote:
Originally Posted by John in AZ View Post
I believe the 203 should have straight 30 weight oil in it.
The original OEM maintenance listing has 30 weight as the recommended weight for tcase fluid. But actually I'm 95% sure that NVG (the new company name of NP [new process] recommends 80-90 now per new testing standards.

Some people even recommend ATF fluid, which you can use, but I'd use gear oil.
__________________

89 Eddie Bauer - 6" RC Lift, 35" KO's, 302/c6 swap, Ford 9"
79 F250 Ranger Lariat - 9" Lift, 40" Ground Hawgs, 400/435/205, D60/D70 LOCKED

Quote:
Originally Posted by SigEpBlue
All I want people to do is STOP, THINK, and SEARCH. Only post if those three fail after thoroughly repeating.
Smok3y is offline   Reply With Quote
Old 02-27-2011, 08:22 AM   #9
Scoop
Fullsize Member
 
Scoop's Avatar
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 2,474
iTrader: (3)
Bronco Info: 78 Custom, 84 Bronco, 74 Ranger - stock, 76 Trail Rig
Just had my 203 gone through and resealed by my tranny guy. He recommended either 0W30 or 5W30 Mobil1 synthetic. I'll probably go with the 5W30.
__________________
Round headlights are COOL (on '78's!)

September 2012 F.O.T.M.

78 Custom EFI Build Thread

84 300 I6 Build Thread
Scoop is offline   Reply With Quote
Old 02-27-2011, 09:25 AM   #10
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
I think I have atf and 90w mixed together now.

Is there a drain plug I can't find?????
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Old 02-27-2011, 09:26 AM   #11
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
Quote:
Originally Posted by magnumpi View Post
You don't have lockout hubs in the frontend do you?
It is not supposed to, but somebody added them at some point.
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Old 02-27-2011, 10:30 AM   #12
Scoop
Fullsize Member
 
Scoop's Avatar
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 2,474
iTrader: (3)
Bronco Info: 78 Custom, 84 Bronco, 74 Ranger - stock, 76 Trail Rig
Quote:
Originally Posted by 69SCJ View Post
I think I have atf and 90w mixed together now.

Is there a drain plug I can't find?????
The drain is the bottom bolt on the rear cover plate. The guy who resealed mine painted both the fill and the drain yellow - see this pic.

__________________
Round headlights are COOL (on '78's!)

September 2012 F.O.T.M.

78 Custom EFI Build Thread

84 300 I6 Build Thread
Scoop is offline   Reply With Quote
Old 02-27-2011, 10:31 AM   #13
Scoop
Fullsize Member
 
Scoop's Avatar
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 2,474
iTrader: (3)
Bronco Info: 78 Custom, 84 Bronco, 74 Ranger - stock, 76 Trail Rig
Quote:
Originally Posted by magnumpi View Post
You don't have lockout hubs in the frontend do you?
Quote:
Originally Posted by 69SCJ View Post
It is not supposed to, but somebody added them at some point.
Then you may have a 203 that's been converted to part time. Same as mine.
__________________
Round headlights are COOL (on '78's!)

September 2012 F.O.T.M.

78 Custom EFI Build Thread

84 300 I6 Build Thread
Scoop is offline   Reply With Quote
Old 02-27-2011, 11:06 AM   #14
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
Any way to identify these changes if made?

Also, thanks for the pic above. I wish it was the same for my 9" rear. Perplexes me that I'd have to pull the third member to drain it!!!! All the other nine inch rears have had drain plugs that I have had in the past.
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Old 02-27-2011, 01:18 PM   #15
Scoop
Fullsize Member
 
Scoop's Avatar
 
Join Date: Mar 2009
Location: Austin, Texas
Posts: 2,474
iTrader: (3)
Bronco Info: 78 Custom, 84 Bronco, 74 Ranger - stock, 76 Trail Rig
Quote:
Originally Posted by 69SCJ View Post
Any way to identify these changes if made?
All the mods are internal so the only way to tell is to verify the shift pattern. Here is the shift pattern for a converted 203 -

lo 4wd
lo 2wd
n
hi 2wd
hi 4wd

Let us know what you find out.
__________________
Round headlights are COOL (on '78's!)

September 2012 F.O.T.M.

78 Custom EFI Build Thread

84 300 I6 Build Thread
Scoop is offline   Reply With Quote
Old 03-01-2011, 07:16 PM   #16
OffOrWFO
Registered User
 
Join Date: Dec 2010
Posts: 2
iTrader: (0)
The actual viscosity of 30w an SAE 90W are not too far apart at operating temp. I would run a 75w-90 syn were it mine. Gear oil has more extreme pressure anti wear additives. Way better for gear boxs.
http://www.bobistheoilguy.com/cms/in...d=48&Itemid=55
OffOrWFO is offline   Reply With Quote
Old 03-02-2011, 08:34 AM   #17
69SCJ
Registered User
 
69SCJ's Avatar
 
Join Date: Mar 2010
Location: Panhandle of Fl
Posts: 512
iTrader: (2)
Bronco Info: 1989, 5.0, auto, Eddie
Good chart to have as a reference.
Thanks
__________________
No fullsize right now, but acquired an uncut I could not resist!
69SCJ is offline   Reply With Quote
Old 03-02-2011, 10:58 AM   #18
BLenker09
Registered User
 
Join Date: Jan 2009
Location: Eden Prairie, Minnesota
Posts: 12
iTrader: (0)
Bronco Info: 1979 Bronco Ranger XLT
What about a NP205? 80w-90?
BLenker09 is offline   Reply With Quote
Old 03-02-2011, 11:59 AM   #19
magnumpi
Wrenching for a Livin'
 
magnumpi's Avatar
 
Join Date: Jan 2004
Location: Sherrills Ford, NC
Posts: 6,988
iTrader: (20)
Bronco Info: '85 Ford Bronco XLT.
Quote:
Originally Posted by BLenker09 View Post
What about a NP205? 80w-90?
Prettymuch the same rules apply to the np205. I run 75-90 because i can get it almost free.

Again, theres no oil pump. Its just splash lube. And its completely gear driven, no chain. Just need something thats really slippery in there.

motor oil, gear oil, or even trans fluid. (Chevy used ATF in some of the later np205s)
__________________
My SuperFord
'85 Bronco......
Welded 14 bolt, HPKingpin D60 w/ lockright, ZF5, NP205, 4.88 gears, SMPFI 393 w/ EDIS(gufx strat), Chevy 52s Front, Inboarded Chevy 63s Rear, DOM heim steering, DOM cage, Saginaw pump, 3/8" fuel system, 200amp 3G Alternator....

ASE Master Automotive Technician
ASE Master Medium/Heavy Truck Technician
magnumpi is offline   Reply With Quote
Old 03-02-2011, 12:30 PM   #20
BLenker09
Registered User
 
Join Date: Jan 2009
Location: Eden Prairie, Minnesota
Posts: 12
iTrader: (0)
Bronco Info: 1979 Bronco Ranger XLT
Quote:
Originally Posted by magnumpi View Post
Prettymuch the same rules apply to the np205. I run 75-90 because i can get it almost free.

Again, theres no oil pump. Its just splash lube. And its completely gear driven, no chain. Just need something thats really slippery in there.

motor oil, gear oil, or even trans fluid. (Chevy used ATF in some of the later np205s)
Thanks
BLenker09 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  FSB Forums > Bronco Discussions > 1978-'79 Bronco Tech


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 03:13 PM.


2003-2009 FullSizeBronco.com. All rights reserved