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Old November 11th, 2006, 01:55 PM   #1
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Exclamation NV3550 Fluid Change

Hey everyone, just thought I would post my adventures in changing my NV3550 fluid in my 04 TJ.

First off, I wanted to get away from the Mopar fluid currently in the tranny since I am having cold shifting problems between 1-2 gears and 3-4 gear. Wanted to go synthetic to keep the viscosity at low temps so that I wouldnt get synchro binding and shifting problems.

After much research there are only a few types of fluid out there that wont void your warranty. Quaker State Synchromesh and Pennzoil Synchromesh both state that they can replace the Mopar fluid (part number 4874464 for Mopar). The problem is that there are many reviews that say that these fluids suck. Some people have complained of trannys failing after using these products and others have said they had "clumps" in the fluid when pouring it out. That scared me a bit.

So after more searching I found the Royal Purple brand of synthetic oils. They also have a NV3550 approved fluid that is full synthetic. I couldnt find any bad reviews regarding the product so I went with it. Here is the website with the application for your tranny - www.royalpurple.com/techa/tranxref.html

I have also heard that AMSoil is also good, but did not see that their oil was qualified for the NV3550. RedLine also had a great MTX oil, but again, not specified for the NV3550 explicitly.

Hope this helps some of you that need to do the tranny fluid change. For the record, I have 30,000 miles and there was quite a bit of shaving build up on the tranny plug magnet. It may not be a bad idea to check yours out even though the factory manual says the fluid is good for the life of the vehicle.

Jesse
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Old November 12th, 2006, 01:55 AM   #2
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"......the factory manual says the fluid is good for the life of the vehicle"???...somehow i see a revision of that part of the manual in the near future. i have yet to see a fluid that will last the "life of the machine".
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Old November 12th, 2006, 05:45 PM   #3
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where did u get the 17mm or 13mm allen (forgot the size) for the drain plug? need to do mine since im sure mine has 45k on it, very well could have 85 though.

thanks for the info.


Ty.
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Old November 12th, 2006, 05:50 PM   #4
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Originally Posted by Blackjackbender View Post
where did u get the 17mm or 13mm allen (forgot the size) for the drain plug? need to do mine since im sure mine has 45k on it, very well could have 85 though.

thanks for the info.


Ty.
I got mine at AutoZone believe it or not. 3 socket set costs 10 bucks (17,15,13mm). Home depot and the local hardware stores didnt have them in 17mm.
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Old November 12th, 2006, 10:30 PM   #5
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Quote:
Originally Posted by Blackjackbender View Post
where did u get the 17mm or 13mm allen (forgot the size) for the drain plug? need to do mine since im sure mine has 45k on it, very well could have 85 though.

thanks for the info.


Ty.
I made my own. I bought a bolt with a 17mm head and ground the shaft into a hex that fits a small deep well socket.
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Old November 12th, 2006, 11:54 PM   #6
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Where'd you find the Royal Purple at? I looked all over but couldn't find it, so I went with the Pennzoil. It's ok for now, but I'll let you know how it is once it gets nice and cold outside.
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Old November 13th, 2006, 07:07 PM   #7
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Where'd you find the Royal Purple at? I looked all over but couldn't find it, so I went with the Pennzoil. It's ok for now, but I'll let you know how it is once it gets nice and cold outside.
Royal Purple has a link at the top of the website with dealers. Just go to the hyperlink in post #1 and it will be on there. As far as the synchromesh goes, keep me posted!

Jesse
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