I change my diff oil every winter before track season. Cheap insurance.

 

Can anyone help me understand the difference between the PDK clutch, PDK transmission, and a differential fluid service?
I believe the PDK clutch service is not as complex and does not require the special tool?
Had a PDK clutch service performed, and 7 liters of part# 000-043-305-14 were charged/listed on invoice, and does the PDK clutch fluid really take 7 liters?
Appreciate any clarification and feedback.

 

PDK clutch use 6 liters and the Differential (GEARS) fluid use 3 liters.

 

PDK clutch - Pentosin FFL3 ATF or Motul 109464 dual clutch

Differential (GEARS) - Mobile PTX 75W90 or Motul gear 300 75W90 or LiquiMoly 75W90 GL5

 

how many events?,
I had been on my GT3RS already on 10 DE and over 2,200 miles, always change motor oil/filter and brake fluid every 3-4 events, tires every 5 events.
Considering changing Differential oil?, should also change the PDK fluid?

 

Thank you, so the entire PDK takes 12 liters: clutch and transmission?

 

Nope, total will be 9!!!, and totally different fluids.

 

I get that.......diff gear oil (75W-90) is 3 liters, and PDK clutch (FFL-3) is 6 = 9; however, is the PDK transmission another 6 liters of FFL-3 in addition to the PDK clutch capacity = 12?

 

I’m about to tackle this on a 991.2 GT3. The workshop manual shows a solid plug where the diff / transmission fluid fill hole should be, but instead there’s a banjo bolt as noted in the photo above. Can someone who has completed this service verify that this is the correct fill hole? I’ve searched a ton of posts but haven’t been able to find a photo to confirm. Thanks!

 

I do a PDK drain and refill (3 quarts of Pentosin, no pan removal or anything) plus a rear differential drain and refill (3 quarts of liqui moly 75w90) every other oil change. I order everything through FCP Euro, since they have the lifetime warranty on the fluids. Yes there is shipping back and yes they increase their prices ever so lightly vs. time but I dig it. Oil changes roughly every 2K-3K miles. I do this myself in my garage as I find it therapeutic - this is not for everyone but works for me and my old 52K mile 991.1 GT3 with G6.

 

Are you doing straight oil swaps, or using oil fill function with a scan tool?

 

That is the correct hole for the diff.
I used Millers XF Premium MTF 75w-90 as it has a direct PN equivalency on the product sheet and it is a premium oil. OEM oil is available only in 20l drum.

 

Whats the cost to change diff oil typically at a shop?

 

Awesome - thank you! I was able to get the OEM Mobil 1 Mobilube PTX 75W-90 fluid through Suncoast Parts - packaged in 1L containers.

https://www.suncoastparts.com/produc...l?gad_source=1

 

I woudn't trust an unsealed non original container. Plus they say it is for every porsche till 2012. Well, 991 Gt3 isnt the case then.