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post #1 of (permalink) Old 01-08-2002, 06:19 PM Thread Starter
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Jeep Progress, Gear oil question.

Here is a pic of the jeep so far. Once I make some spring purches I will be able to put the axles and springs in. Anyhow as it gets closer I was wondering what to put in for lubricant for the np208 t-case and t-176 tranny. Will 80-90 weight gear oil be fine??? I know some trannys take automatic tranny fluid. thanks for the help Mike

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post #2 of (permalink) Old 01-09-2002, 07:54 AM Thread Starter
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Re: Jeep Progress, Gear oil question.

common guys, someone must know what kind of lubricant is used for the T-176 and NP208 case. thanks

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post #3 of (permalink) Old 01-09-2002, 08:11 AM
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Re: Jeep Progress, Gear oil question.

You should be alright, my son just had his stuff apart and when he put it all back together he used that weight oil in his trans and dextron atf in his transfer case, he has the same setup as you, hope this helps out, later.

Bird

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post #4 of (permalink) Old 01-09-2002, 09:27 AM
 
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Re: Jeep Progress, Gear oil question.

The T-176 uses gear lube (80w 90 should be fine).
I think an NP208 uses Dexron ATF, but don't take my word for unless someone else tells you too [img]/wwwthreads_images/icons/smile.gif[/img]

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post #5 of (permalink) Old 01-09-2002, 10:12 AM
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Re: Jeep Progress, Gear oil question.

Go to Auto Zone and buy the Jeep tear down manual by Hanes.
(they're usually under the front counter) These books list all fluids for all parts of your Jeep. Plus every book covers a complete tear down and rebuild with plenty of pictures.

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post #6 of (permalink) Old 01-14-2002, 09:24 PM Thread Starter
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Re: Jeep Progress, Gear oil question.

After talking to a few people I am confused weather to use 80-90 gear oil or GL3 for the transmission (T176). Before I use the wrong lubricant can anyone confirm one or the other?

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post #7 of (permalink) Old 01-14-2002, 10:14 PM
 
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Re: Jeep Progress, Gear oil question.

There is no such thing as just "GL-3" oil. GL-3 is a service calssification. The oil must also have a viscosity grade ))(80W-90, 85W-90, 90W-140 etc.) Gear lube is available in GL-1, 2, 3, 4, and 5. The service rating is basically determined by breakdown point, compatibility with certain materials, etc. You can use an oil with a higher rating in an application requiring a lower grade (ie. Your T-176 requiring GL-3 lubiricant can run on GL-5) Most oil sold today will be GL-5 rated.
You must use at least GL-3 rated oil in that tranny. Viscosity is choosen based on a number of conditions including temperature, and condition of the tranny, and, of course, the manufactures recomendations (just like choosing a viscosity for your engine.) ie: most engines made in the last few years recomend 5W-30, but you may choose to run say 0W-30 to allow it to flow quicker when cold, or maybe 10W-40 on a badly worn engine to reduce blow by and oil consumption.
For your application, 80W-90 should be fine.
So, you'll need an 80W-90 weight oil with at least a GL-3 rating (Nearly any gear oil out ther today will meet the GL-3 specs)

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post #8 of (permalink) Old 01-14-2002, 10:41 PM
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Re: Jeep Progress, Gear oil question.

Mike,
Derek just gave you the best info. for your tranny
Here in Maine I use 80/90 all winter so I can shift it on cold mornings, and 90/140 in the summer, all of it with the highest GLI number I can get in a 5 gal pail.
Others just run the synthetic all year. I get into too much water and muck, so I change it often.
Sorry, I don't know about that Xcase's needs.


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