[jns211]

Does anyone have information regarding how to complete the PDK service at the 50,000 mile mark?

At the 50,000 mile mark, do you just drain and install new clutch fluid?

I would think the maintenance procedure(s) for the 718 cars wouldn't be much different than the other PDK transmission Porsches.

Perhaps someone on the 718forum has experience with the PDK service on a different model of Porsche?

 

[jns211]

Thought I'd share what I found out regarding the PDK service. Hopefully, this information will help others who don't have experience with the PDK service.

• Factory recommendations are to service the PDK every 40,000 miles. (change the Pentosin FFL-3 fluid, filter, & pan along with the Mobil 1 75W-90 gear oil). If you spend a lot of time on the track, you probably want to do the service every 20,000-30,000 miles.

• You need a PIWIS system to properly complete the FFL-3 transmission fluid fill and clutch re-learn/re-calibration. Not a DIY project unless you have access to a PIWIS system. Also, the FFL-3 fluid fill process must occur during a particular temperature range.

• The 75W-90 gear oil is an easy drain and fill that can be a DIY project. Since this is a DIY task, the shop recommended to do a drain and fill every 1-2 track sessions. The 718's capacity is right at 3 quarts, but I would buy 4 quarts to be safe.

Listed below are three links I found on Rennlist where the PDK service is discussed:

PDK clutch oil service - Rennlist - Porsche Discussion Forums

997 Forum - PDK clutch oil service - Had my PDK clutch oil service done today. I had the day off so I watched the P Tech , Fred, do the service. Here is a brief synopsis with a couple of pics. Now, only 4 litres of oil was used.... he probably let it drain for about 25 minutes. You will not get...

rennlist.com

PDK - Normal or??? - Rennlist - Porsche Discussion Forums

997 Forum - PDK - Normal or??? - Hey guys looking to see if you have experienced this and if it is considered normal. I recently purchased a 09 c2 cab PDK w/42k. Absolutely love the car as it is a blast to drive. PDK seems to shift smooth however I have noticed one thing that may be concerning...

rennlist.com

DIY 981 PDK Clutch side fluid change - Rennlist - Porsche Discussion Forums

981 Forum - DIY 981 PDK Clutch side fluid change - I searched and didn't see a specific DIY for this so forgive me if it's been covered before. I used PorscheAddict thread to change the gear oil side, thanks!! I performed this on my 2015 GTS with 66k on the clock. I bought the car in April with...

rennlist.com

 

[Optical TDI]

40k mile interval? I thought it was much longer the last time looking at the service intervals in the manual. Maybe my memory is shot!

 

[jns211]

40k mile interval? I thought it was much longer the last time looking at the service intervals in the manual. Maybe my memory is shot!

Service advisor at the dealership told me 40,000-60,000 miles but wanted to service my PDK at 40,000 miles because he knows my car has been out on the track with his PCA buddies.

The shop I use that normally only works on Porsche track cars told me to service it every 20,000-30,000 miles and to change the gear oil every 1-2 events.

You can probably get away with waiting until 50,000 or 60,000 miles if you don't drive your car hard.

I'm trying to "err on the side of caution" and service my PDK every 30,000-40,000 miles.

Might not be a bad idea to check with your dealership's service advisor to make sure you satisfy their service requirements to keep your warranty.

 

[Lostpilot28]

I'm looking at the Inspection schedule document for the 718 Boxter / Cayman (2017 MY). It says the PDK transmission and clutch fluid change is every 120,000 miles. I'm not saying don't change it sooner if you're tracking your car, of course...but I want to know where the 50,000 mile recommendation came from?

 

[thunderstrike]

When I serviced 2014 VW Jetta transmission filter and oil, I measured what I took out, replaced same amount plus couple more oz. I would think the same method will work. Comments?

 

[thunderstrike]

I also serviced my son's 2013 Jetta GLI DSG. He had previously had transmission service done by a dealer in Virginia Beach, VA area. Well, what I drained out was only 2 liters when capacity calls for 4.5 liters.

If it's possible for do it yourself, I prefer doing it myself because several of dealer services were accomplished in poor quality or weren't completed correctly. VW and Porsche dealers are the same people as far as I know.

 

[thunderstrike]

Just wanted to say, it's not money I am trying to save. It's the quality of work, and I can't (or hard to) trust others unless I have to because I lack the expertise or tools. Dealers are trying to generate revenue and it turns into rushing jobs, ends up being sloppy.

 

[Josh_357]

In the US market PDK clutch fluid and transmission fluid are done at 120k miles. Though I don’t subscribe to that, but I autocross, generally drive hard and launch mine sometimes.

There are two fluids. The first is the transmission gear oil for the gear set and differential. It is a drain and fill just like a manual trans.

The second is the PDK clutch fluid for the clutch pack and valve body. This fluid can be drained and filled through a set of drain and fill plugs, however the proper way is with a PIWIS to engage a bleeding procedure. The procedure is you fill it full, then warm the transmission to a set temp, bleed the system with the PIWIS to get any air out and set the final fill. If you do a drain and fill, you can likely measure and fill statically and be fine. The real PDK service is to drain the clutch fluid, then remove and replace the pan, the filter filter is part of the pan. Then you really should do the proper bleed procedure.

Link to PIWIS bleed procedure https://rennlist.com/forums/attachm...checking-and-topping-up-atf-clutch-fluid-.pdf

Link to a thread on gear oil changes DIY gear oil change on 981S PDK - Rennlist - Porsche Discussion Forums

 

[Lostpilot28]

How much more fluid are you going to get out from the PIWIS procedure vs. a static drain & fill? If it's not significant, I'll likely do the drain and fill. I'm coming up on 44,000 miles and also autocross and drive hard. I don't think I need to change anything quite yet...but I'm preparing.

Thoughts?

 

[Josh_357]

I have only done drain and fills myself with my PIWIS, never pulled the pan. I've never exceeded 40k miles on my 987.2 and 20k on my 718. A drain and fill should yield between 3-3.5 liters of fluid. A Drain with filter, based on my research, is closer to 4 liters. The total fluid capacity is between 5-6 liters, though even with pulling pan and using PIWIS you will never get it all out. PIWIS only bleeds air when full, it does not drain extra fluid.

Since I'm over the top with my car, I did a drain and fill, drove for a couple days, and did a second drain and fill to get a good amount of fluid exchanged.

Another good post. https://www.planet-9.com/threads/di...-change-without-using-piwis-fill-mode.237865/

 

[Lostpilot28]

That is a really good read. Thanks for posting that link. I may follow his procedure and do this myself. I will likely do it twice as well, to ensure more of the old fluid is removed.

What brand and type of fluid did you use for the PDK clutch? Seems like a few like the DCT fluid from Driven.

 

[Josh_357]

Factory calls for Pentosin FFL-3 so that's what I used. https://www.amazon.com/Pentosin-1052107-Synthetic-Double-Transmission/dp/B007PCQBQ8

Gear oil I used was Motul 300 75w90.

 

[Lostpilot28]

So I did this last weekend...was not nearly as difficult as I expected. The car seems to shift smoother, and the clutch rattle (ie. at stop lights, etc) seems to be gone. Both fluids were replaced per the procedure listed...but in both cases what I drained out was slightly less (maybe around 100 mL). I'm guessing neither had been serviced since it was built at the factory...and I'm right at 44,000 miles on the clock.

Hope this info helps someone!

 

[dkmajm]

So I did this last weekend...was not nearly as difficult as I expected. The car seems to shift smoother, and the clutch rattle (ie. at stop lights, etc) seems to be gone. Both fluids were replaced per the procedure listed...but in both cases what I drained out was slightly less (maybe around 100 mL). I'm guessing neither had been serviced since it was built at the factory...and I'm right at 44,000 miles on the clock.

Hope this info helps someone!

Did you do both fluids? (Clutch fluid and gear oil)


Sent from my iPad using Tapatalk

 

[Lostpilot28]

Yes, both.

 

[dkmajm]

Yes, both.

Awesome. Can you advise here or via pm what fluids you used on both instances. Standing at back of car looking forward, the PDK drain/fill is on right?


Sent from my iPhone using Tapatalk

 

[Josh_357]

I’ll let lostpilot tell you what he used, but I highly suggest following the factory fill for Pentosin FFL-3 for PDK clutch, as that half of the system is very sensitive. I use it exclusively and have done 4 drain and fills in my cars with the PIWIS.

Gear side I use the Motul 300 75w90, but can use others here.

from another forum, plug 1 is part of gear oil.

 

[Lostpilot28]

I used Pentosin FFL3 for the clutch. Mobil 1 full synthetic for the transmission.

 

[dkmajm]

I’ll let lostpilot tell you what he used, but I highly suggest following the factory fill for Pentosin FFL-3 for PDK clutch, as that half of the system is very sensitive. I use it exclusively and have done 4 drain and fills in my cars with the PIWIS.

Gear side I use the Motul 300 75w90, but can use others here.

from another forum, plug 1 is part of gear oil.
View attachment 30710

Awesome…thank you

…any photos of the fill locations ?!

And quantity of each fluid needed?

Do appreciate your help…


Sent from my iPhone using Tapatalk