Gear oil

[Posi]

Not a problem, I'm sure it wasn't the first time you got stung.

 

[Lumpy Grits]

Carry on,
LG

 

[Petescj]

Enough now. Useful information was shared. Whenever Lubricants like oil are brought up opinions fly. Its up to the reader to make his / her decsion. No more negative comments. If you two would like to continue your witty banter take it to Pm.

Show me when/where Borg-Warner ever approved 30W for 'our' T5.
LG

I'm not doing your homework for you, call up a Chrysler dealership and ask.

I did-They said 75W-90 syn for the old AMC, T5s.

LG

If that is what they really told you, and you believed it, your both mistaken.


The T-5 lube part # in 1984 was 89 83 000 000
Superseded by part # 4549636
Superseded by part # 4874464
The T-5 fluid must meet specification SM 9224
Shell owns Pennzoil
Pennzoil supplies Mopar
Mopar part # 4874464 is,
Pennzoil 3501 = synthetic 5w-20
Amsoil synthetic manual synchromesh transmission fluid 5W-20 meets SM 9224 as well.
Prior to 1991 5w30 or 30w were acceptable fluids for the T-5 depending on climate.

If I owned a T-5, I wouldn't but anything heavier then what the factory recommends from the list above. Hope this helps.

You can stop the snide remarks---
And YES, that's what I was told--Didn't say I believed or agreed.
Haven rebuild a few dozen+ T4 & T5 'boxes' over the last 30 yrs, if someone thinks I'm run'n 5W20 in them, is sadly mistaken.
Have proven to myself(user oil analysis)and many others-that 75W90 syn gear oil works the best.
Jeep T5's stopped be'n made in 1986.
Have a great day--
LG

You asked, I supplied the info from the factory. Pennzoil's books go back to 1984 as well. It's your tranny use what you want. The snide comment was way off base and not appreciated.

"The snide comment was way off base and not appreciated."

Your apology, is accepted-
LG

Not a problem, I'm sure it wasn't the first time you got stung.

Carry on,
LG

 

[Lumpy Grits]

Apologies to the forum-
LG

 

[callerys]

Got it done today. Thanks everyone.

 

[Vinci]

Resurrecting this for anyone going through this now: Modern Driveline recommends Lucas synthetic 50W HD transmission oil for non-World Class T-5's. You can order it through O'Reilly's, part 10146. Just TIFWIW. Modern is something of an authority on vintage manual transmissions.