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Old Dec 11, 2010 | 09:25 AM
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Transfer Case

I'm pretty sure this is covered.What is the best fluid for the transfercase? What are you guys using? Thanks,Jim
 
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Old Dec 11, 2010 | 10:34 AM
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I use amsoil. I changed my fluids at 30,000 miles and I noticed that the 4x4 sound decreased, it is hard to hear it now.
 
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Old Dec 11, 2010 | 10:55 AM
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Originally Posted by jim6liter
I'm pretty sure this is covered.What is the best fluid for the transfercase? What are you guys using? Thanks,Jim
comes with mercon sp IIRC
 
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Old Dec 11, 2010 | 11:37 AM
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Book fill volume - approximately 2 qts

When I did it, I put in 3 quarts to get it to the top (fill bolt).
I used Royal Purple Synchromax
 
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Old Dec 11, 2010 | 12:24 PM
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When I did mine I needed a little more than 2Q
 
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Old Dec 11, 2010 | 12:44 PM
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Great, thanks guys. So I just fill it to the top fill hole. I have 3 qrts of SP left over from the tranny.I will use that.
 
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Old Dec 11, 2010 | 01:31 PM
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Actually Ford specifies Mercon for the transfer case. (2 qt. or 1.9 L.)
 
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Old Dec 11, 2010 | 01:34 PM
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I would also recommend a synthetic Mercon V product over the SP. I don't know why the SP wouldn't work, but I am usually conservative on fluids and filters.
 
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Old Dec 11, 2010 | 01:37 PM
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Ok,well I can get some synthetic.Thanks for the info.
 
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Old Dec 11, 2010 | 02:40 PM
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I used Mobil 1 ATF in mine. Took just over 2 quarts to fill it to the hole.
 
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Old Dec 11, 2010 | 02:57 PM
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Originally Posted by bismic
I would also recommend a synthetic Mercon V product over the SP. I don't know why the SP wouldn't work, but I am usually conservative on fluids and filters.

I think V may also be better, V has a thicker viscosity than sp and lv
 
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Old Dec 11, 2010 | 06:51 PM
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2 quarts of Mobile 1 Mercon V.

I drive it to get the old oil warm, I do not jack up truck to it is level, remove both plugs. Drink beer to give it time to drain. I found a hose that will screw into the fluid bottle that is perfect. I run it to the top fill hole there will be about a pint left. I drive it in 4x4 for a few hours, then check the level again, I find that it is about a pint low
 
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Old Dec 11, 2010 | 08:45 PM
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Originally Posted by KRDiesel
2 quarts of Mobile 1 Mercon V.

I drive it to get the old oil warm, I do not jack up truck to it is level, remove both plugs. Drink beer to give it time to drain. I found a hose that will screw into the fluid bottle that is perfect. I run it to the top fill hole there will be about a pint left. I drive it in 4x4 for a few hours, then check the level again, I find that it is about a pint low
Okay so I will use the mercon v and it looks like a 2-3 beer job. Thanks guys.
 
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Old Dec 12, 2010 | 07:21 AM
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One of those $5 fluid transfer pumps to refill the ATF fluid can be handy on this job.
 
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