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Discussion Starter #1
I want to change the oil in my 6 speed manual trans. To drain the old oil do I need to just remove one of the small square plates on the side? Im guessing that is where an optional PTO would mount. Thanks
 

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Just pull a bottom bolt on the cover and the fluid will drain, the bolt holes are not blind holes.
 

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Discussion Starter #3
Excellent, thanks lmeyer9916
 

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I was told by a friend who own a tranny shop that they have had problems with the rear bearing and bushings not oiling so he said to refill the trans to factory level then pull the shifter out and put 2 more quarts. something to consider.
 

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GA CUMMINS CREW PREZ & Captain of the USS FAILBOAT
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I would just drain it from the bottom, pull the shift tower and completely fill it back up from the top. The rotational mass of the inner gears are what throws the fluid throughout the transmission for lubrication.
 

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2006 Mega 3500 Laramie
you got a G56 Daimler Getrag transmission.
has real drain plug on bottom and side fill plug.
use ATF+4 auto tranny transmission fluid per manuf.

these don't benefit from extra fluid. fill to fill hole.
 

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Discussion Starter #8
sorry guess I should have clarified. Im working on my 2004.5 with a 6 speed manual trans
 

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If reverse is over to the right and up it's an NV5600. If you ask whether or not to overfill it you'll start a war. Personally I run a quart over, never had a problem. Just make sure to add the correct type of fluid. There is mopar stuff, pennzoil syncromesh, amsoil and others. DO NOT add gear oil.
 

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ya, saw your sig and 06 auto after i posted. eyesight goes first.
tried to delete but the site went nuke

Love my NV5600, run it with 7 qts 5 of RL MTL and 2 of MT90 hvy towing. smooth shifts on the hard pulls hot.

sorry guess I should have clarified. Im working on my 2004.5 with a 6 speed manual trans
 

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If I add one more that stock how many quarts total? I have a NV5600. thanks
 

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Trying to learn
'03 QCLB 2500 305/555 NV5600 3.73 4x4
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I would take off the plate and then remove the magnet in the bottom off the trans and clean it. Then you can also wipe out the bottom of the trans. To put the plate back use RTV silicone gasket maker.

You will need a 17mm allen or make one from a welded bolt and nut to remove the fill plug. I always loosen it before removing the plate, just to make sure it will come out.
 

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Can I use Valvoline 75w-90 gear oil to put back, if not what do I use. Thanks
 

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nope
New Venture/Dodge spec's a proprietary lube for the NV5600 that's lower viscosity i.e. thinner than 75w90
has to be a GL-4 rated lube that's brass syncro safe.

the Mopar repackaged stuff is $30+ per quart.
Amsoil MTF or Redline MTL are perfect matches and 1/3 the price. both are full synthetic thus will hold up far better to the heat and high gear teeth loads of the NV5600 behind a Cummins

Red Line Synthetic Oil - Gear Oil for Manual Transmissions - MTL 70W80 GL-4 Gear Oil

AMSOIL - Synthetic Manual Synchromesh Transmission Fluid (MTF)

Can I use Valvoline 75w-90 gear oil to put back, if not what do I use. Thanks
 
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