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  #1  
Old March 2nd, 2010, 06:37 PM
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barry f
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transmission/transfer case fluid

This may be stupid as I only did it once. I remember pulling a plug under the truck draining the transmission and refilling with redline. Now I am about to do that input gear and I was wondering, is the transmission and the transfer case filled with different fluid? If so where is the transfer case plugs? Is it possible in my infinite wisdom when I changed my tranny fluid I really did the transfer case with redline?
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  #2  
Old March 2nd, 2010, 06:43 PM
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Transfer case uses regular gear oil. 80W-90 or 75W90. Drain is on bottom, small hex head...... Fill/Level is on back next to parking brake.
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  #3  
Old March 2nd, 2010, 06:49 PM
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How much does it take? Do you need a pump for that too?

What would happen if you put redline in transfer case?

To change input gear do you need to drain both?

------ Follow up post added March 2nd, 2010 04:03 PM ------

Just realized for input gear it is transfer case that should be drained. So just regular oil?

How much and what?
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  #4  
Old March 2nd, 2010, 07:21 PM
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if you are doing the gear, you just have to do the t-case.. plug on the bottom pan. Filler on the rear near the parking brake. Use a 1/2 breaker bar to open that. It takes 2 qts.. I would use any good synthetic 90wt gear lube. Red line or royal purple are good ones.. Oh and you do not have to pump it in. Just pour it in the filler plug or fill it before you put the input gear in.
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Old March 2nd, 2010, 08:20 PM
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Quote:
Originally Posted by TDI Guy View Post
if you are doing the gear, you just have to do the t-case.. plug on the bottom pan. Filler on the rear near the parking brake. Use a 1/2 breaker bar to open that. It takes 2 qts.. I would use any good synthetic 90wt gear lube. Red line or royal purple are good ones.. Oh and you do not have to pump it in. Just pour it in the filler plug or fill it before you put the input gear in.
Pour in works but its a little messy. I like to jack it up on the DS so I can get a little more in the transfer case.
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  #6  
Old March 2nd, 2010, 08:25 PM
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Quote:
Originally Posted by bjf View Post

To change input gear do you need to drain both?
you do not need to drain anything to change the input gear because the oil level is below the level of the PTO cover opening.
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  #7  
Old March 2nd, 2010, 08:31 PM
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Ah but shouldn't I change it anyway?
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  #8  
Old March 2nd, 2010, 09:38 PM
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Ah but shouldn't I change it anyway?

Sure, but you don't have to.
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  #9  
Old March 2nd, 2010, 10:02 PM
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Check it before you change it. Last time i changed
it i felt sorry. The damn thing was like new.
I use Motul Gear 300 (synthetic 75W90).
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Old March 2nd, 2010, 10:14 PM
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It does not get black, but it does lose it sheer ability. I use synthetic and change at 30k.
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  #11  
Old March 2nd, 2010, 10:15 PM
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I always figured that good old castrol 80 90 was fine. I also thought that all cars that have a fill and drain operate the same. Pour it in and it is full when it starts to come out the fill plug. That is why it is made that way. Possibly over thinking an easy and cheap task. Maybe synthetic is better in the long haul.

Thats my story and I'm sticking to it.
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  #12  
Old March 2nd, 2010, 10:37 PM
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Yeah thinking about trying the royal purple stuff. Looks decent enough.
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Are there shocks that I can addjust up and down like my friends LX460? That would be very cool!
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  #13  
Old March 3rd, 2010, 07:41 AM
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Quote:
Originally Posted by Ren Ching View Post
you do not need to drain anything to change the input gear because the oil level is below the level of the PTO cover opening.
I was going to say that but i figured that if he is changing the gear for some reason, there prob was a problem and there is some crap in the oil from the worn out gear or inner splines... Good time to change it.
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  #14  
Old March 3rd, 2010, 01:04 PM
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How do I flush the fluid?
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  #15  
Old March 3rd, 2010, 03:32 PM
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hook a water hose up to the filler plug and let it run for a half hour
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  #16  
Old March 3rd, 2010, 04:59 PM
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come on!! that has to be a joke
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  #17  
Old March 3rd, 2010, 06:38 PM
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Quote:
Originally Posted by rover4x4 View Post
hook a water hose up to the filler plug and let it run for a half hour
Come on now, if this is real advice, ok...but if it could harm someone's truck, don't post it. Everyone jokes around here, but, if you do, at least make it obvious. My first thought was that water in the tcase will wreck it, at least that's what my mechanic told me probably trashed one of my old ones...
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  #18  
Old March 3rd, 2010, 06:39 PM
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For shame. Ruin my truck damn you. Unless you are talking about putting a hose in Horsey's mouth and letting it run for a half hour I don't want to hear it.
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  #19  
Old March 3rd, 2010, 08:19 PM
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I used to flush my SIII transmission case with diesel.
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  #20  
Old March 3rd, 2010, 09:59 PM
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For shame. Ruin my truck damn you. Unless you are talking about putting a hose in Horsey's mouth and letting it run for a half hour I don't want to hear it.
Now you want to water board Josh? When will this end?
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