Audi A8 D4 Transfer Case Fluid Change

[@jasonschultz7770]

Mike, thanks so much for taking the time/effort to put this video series together. It's a great reference. I also appreciate you specifying the bolt type/size and torque specs. Lots of vids out there don't go to this level of detail. In my opinion, trying to cross-reference the proper torque specs is often times the most frustrating part of the job (when you don't have the service manuals). Much appreciated! BTW, I can't seem to locate the transmission filter/fluid change video that was mentioned. Has anyone found a decent one to use? I plan on doing that at the same time while doing the transfer case fluid.

[@mikesgarage1518]

This is the one I mentioned; kzbin.info/www/bejne/Y3TEkKGDbL9jqZosi=aYeqYmqnewAjcxJU

[@dzonve]

Thanks for posting these videos Mike! You’re a lifesaver! 🤙🏻

[@dongillis1500]

Thanks for your video. I have a high mileage D4, will do this once I fix my air suspension problems and a blacked out MMI screen, lol.

[@devellwilson7099]

Excellent work Mike thank you.

[@toneskill]

Great video should have done the transmission at same time you done all the hard part

[@jakeb9520]

Is see there was some welding done on the exhaust pipes. Did you replace the just the flex areas? If so, where did you get those peices and are you happy with the results? Thinking if should go with the pipe from Audi that has the flex built into it or just cut out and replace just the flex. Thanks in advance

[@mikesgarage1518]

Yes, they were leaking badly so I replaced the just the flex joints. I was going to make a video on it but my welding is pretty crappy so did not make one. So far the repair is held up for a few years, might use the Audi ones if it fails again.

[@jakeb9520]

@@mikesgarage1518 thanks for the reply! Did you use some specific brand ones or just any brand flex pieces that diameter should work? Did you get stainless ones by chance?

[@mikesgarage1518]

@@jakeb9520 No specific brand, just one that had the correct diameter and stainless

[@jakeb9520]

@@mikesgarage1518 awesome thanks!

[@emaluc95]

Where did you find that info about the gearbox? Is it a service/repair manual that you can buy online? Thanks

[@mikesgarage1518]

Yep got it from eManualOnline

[@TheBluegrasslady1]

I have a 2012 A8LQuattro , what differential or axkel fluid does it the. Audi told me leave it alone ,not to change

[@mikesgarage1518]

I chose to change mine at nearly 100k miles. I have posted 3 videos for the rear, center and front fluid. The fluid part number is in the description.

[@ritvikmishra46]

​@@mikesgarage1518 front rear and center same fluid to be used?

[@dzonve]

Do you know by any chance if the facelift B4 with 3.0 engine has shared oil or separate. Thanks for your videos, very informative and helpful 🤙🏻🤙🏻🤙🏻

[@mikesgarage1518]

I am not sure on that model, the information in this video came from AlldataDIY and only covers the D4.

[@toneskill]

@@mikesgarage1518 have you a link?

[@mikesgarage1518]

​@@toneskill www.alldata.com/diy-us/en

[@TheBluegrasslady1]

I never seen so much confusion over whether my Audi A8 L Quattro front differential can or cannot be changed, or if it uses gear oil or transmission fluid. Omg, I just want to change it…

[@ritvikmishra46]

​ @mikesgarage1518 front rear and center same fluid to be used? and what quantity?. does sports differential use different fluids? which is sports differential location. I have sports differential. pl explain transfer case and differential. thank you

[@mikesgarage1518]

The combined/separate transfer case and front differential oiling is discussed at the 1 min mark and the part number for the fluid I used is in the description for all 3 videos. I have no knowledge of the sports differential, I would suggest calling a dealer however I would assume only the rear is a sports differential but not sure.

[@ritvikmishra46]

thanks

[@mchaudry9811]

Do you the drain and fill bolts part numbers? Can’t reuse them. I have a leak from the drain bolt. Thanks

[@mikesgarage1518]

I am not having any luck finding this, I would suggest the dealer

[@snapdragogon69]

The front and centre are not on the parts list, only rear. I will put a smear of thread seal on mine. The Loctite green seal or similar@@mikesgarage1518

[@mchaudry9811]

Hi, are the bolts for the transfer case reusable? I have a leak now. Used less than a liter even after waiting for the fill so it would go down evenly. Any ideas?

[@mikesgarage1518]

I reused mine with no issue

[@My0186]

Have you done a transmission service on a A8L yet?

[@mikesgarage1518]

Yes, was not too bad. I used the ZF filter kit, same as OEM but less. Another KZbinr (demoncher) has a video on changing this.

[@My0186]

@@mikesgarage1518 thanks I'll search for the video. Dealer want about 1100 bucks for a service. 👎

[@allenmichail]

Where did you get the service manual?

[@mikesgarage1518]

I use ALLDATAdiy.com

[@eugeneugen5607]

А фильтр?

[@TheBluegrasslady1]

Where's Mike's garage

[@memoriesdagoberto9724]

what amount of oil transmision i need

[@mikesgarage1518]

Hi for the transmission, I used around 5 liters. For the transfer case, it was around 1 liter.

[@guzforce]

@@mikesgarage1518 are those the same fluid?

[@mikesgarage1518]

@@guzforce No the transmission takes ZF Lifeguard 8

[@guzforce]

@@mikesgarage1518 Thanks! I'm looking for some kit including the oil, gasket, bolts, pan guides with good oil specs quality..

[@mikesgarage1518]

@@guzforce When I changed my transmission fluid last year I was not able to find a complete kit. Search for ZF 1087298348 for the filter kit. FCP Euro had a decent price for the Lifeguard 8 fluid. The service manual mentions the transmission support bracket bolts should be replaced since they are torque to yield (part number I used was N91174201). The Meyle filter kit on FCP is less but I chose to go OE. Hope this helps.

[@SolveElectronics]

while you posed the video and did a good job, the procedusre you did was actually not correct. with those gearboxes that use shared oil lines between the center and front diffs, you have to drain both at the same time, fill the rear to the top of the plug, then the front, and then over fill the front by 1 litre (dont ask how, i tried and failed, dramatically) and wait for the oil to "reach an equilibrium, at which point the rear diff should start flowing oil outof the filler. then it is done

[@mikesgarage1518]

Please watch from 1:00 - 1:45. I clearly stated that my A8 uses separated oil systems therefor they are changes individually and use two different fluids.