working4it

Well, I finally changed the Differentials and the transfer case. I have 105K on my 04 S. Was a little worried at first on the Front Differential. Its very difficult to get the fill plug off....See the before and after pictures...

RESP

Great pics! Love to see lubricants doing their job!

Slow Guy

Just a suggestion but add the word "fluids" to the end of your title.

Which fluids did you use?
I'll probably do mine at 80k mi.

working4it

Good Suggestion! I will have to look to see how to change the title once you submit it....

After much deliberation I used Mobill 1 ATF instead of the Esso LT7114. I contacted Mobil several times and they confirmed the Mobie 1 ATF full synthetic is the new version as Esso. The mobil rep said that due to licensing agreements Mobil is not allowed to say "recommended" but stated Moibl 1 meets LT71141 spec. He also stated Mobil now produces the Esso as well as an oversea Mobil LT71141 brand. So I felt comfotable using it on my ZF transmission. The gear oil I used 75w-90 on the front and Amsoil on the rear. Both of these meet the specs for ZF transmissions. I

mudman2

Have you noticed and difference in noise from them ?

Slow Guy

Go to your first post, click on the edit button in the lower right corner, then click on "go advanced" button and you can edit the title.

Thanks, good to know. Guy in the neighborhood is a lubricants rep and apparently reps for Mobil. He's offered to cet me some of my 993 oil that WalMart and AutoZone seem to no longer cary.

User 4221

Did I see that you dropped the drain before the fill plug?

If so, major cajones doing it that way. Glad things went well.

working4it

No..I didn't drop the drain before the fill...after the initial drain I was flushing it out with clean fluid.
Also, the reason I used different fluid in the rear differential is the original fluid Burmah Carbon Mod has a slip additive per the mobil rep I spoke to. He said I could use the Mobil 1 LS 75w90 in both Front/Rear but the Amsoil is spec'd for Gl-4 and Gl-5 with additivies for LSD.

Vino

Very cool and good job!

How much oil did you use for the diffs and transfer case?
A good preventative thing to do after reading about a few front diff failures. Did the original diff fluids seem lighter compared to what you put in?

Thanks for sharing, I'll be doing this next year.

working4it

A touch lighter but not much. The fluid stinks. My wife could smell it in the house. Deffinately much quieter though.

Front Diff-about 1 quart
Transfer Case-about 3/4 of a quart
Rear Diff-about 1 1/2 quarts

I am going to do the transmission in the next couple of weeks.

hahnmgh63

The strong smell is from the Sulphur which most all gear oils whether conventional or synthetic use as and extreme wear protection additive. Makes you feel better knowing that you have some clean fresh oil in there compared to the old stuff. Great job, I need to get off my butt and do it to my Pig, I've only done the transfer case so far, both diffs are next.

working4it

I am reading as much as I can on changing the transmission and came accross this link...I found it helpful on filling it back up and modifing the filler tube...http://www.audipages.com/Tech_Articl...servicing.html
http://www.renntech.org/forums/topic...nge-procedure/

hahnmgh63

The fillup procedure is very similar to that you listed of the Audi but the filter tube isn't a problem on the Cayenne's. The Audi transmission is a ZF and the Cayenne's is actually a Japanese transmission, Aisin, Some of the aftermarket filters for the ZF trannies have been made with filter suction tubes that were slightly too long and Audi/ZF complicated the problem by changing the pan design a couple of times. It isn't too difficult if you can measure the tranny oil temp but I haven't checked to see if you can do this with Durametric yet? Maybe someone here knows, if so they filter & Oil change would be a cinch.

working4it

Thats a great question I am not sure if the Durametric shows the temp of the transmission. I no all the procedures for the fill needs it to be around 40C. You seem pretty knowledgeable have you already done it?

JAGMAN1

Durametric does show transmission temp. After 5 minutes or so in D while stopped will generate 40 degree temps.