dgjks6

So I thought I was an expert. But getting confused. About to do the 12 year gear oil change. Want to make sure I'm doing this right

The green is the PDK clutch fluid. The red is the PDK gear oil. Correct?



This is the fill for the PDK gear fluid? It's circled in red. It's on the passenger side right above the drain plug.



This is the fill for the PDK clutch fluid? It's circled in green. On the drivers side.

dgjks6

Carp. Carp. Carp.

Plans delayed for two reasons. The bolts are aluminum and when I opened what I think is the fill valve the Allen socket kinda got stuck. Going to order new bolts. And...

I have a PDK leak. No drips. Nothing on the underbody panels. But it is wet everywhere along the edge of the pan and goes up a little. First problem in 6 years so I can't be mad. Not sure if it is the pan or a connector going into the transmission. Either way going to the dealer.

PV997

Let us know how it goes and ask the dealer to walk through the procedure with you before they do it. There was a comment this morning on another thread about a dealer in Canada putting the same gear oil fluid in both chambers and claiming that was correct for these cars. Probably an anomaly, but I'd want a dealer to explain it to me first to make sure they knew what they were doing.

Hopefully the leak is at the pan and not the connector. The official Porsche diagnostic remedy for a leak at the gearbox connector is to "replace PDK transmission" (gulp). Obviously you'd never do that but wanted to give you a heads up in case you hear it. The connector O-ring can be replaced but you need to split the gearbox to remove the connector to get to it. Probably worthwhile to clean around the connector and lay a bead of RTV if there's a leak rather than getting carried away. Hope it goes well.

dgjks6

Update. If this connector is the leak - which I think it is - then they are going to replace the PDK?


And I got the PDK clutch fluid fill hole wrong. This is it

PV997

Do you have an extended warranty? If so you could probably push for full PDK replacement. If you don't, I think it would be crazy to replace the PDK for this but that's just my opinion.

Here's the relevant picture for PDK leaks, that connector is #4.

Edit: attached the relevant PDF document to this comment.







And here's the remedy, item #4. The last column is labeled "remedial action".

dgjks6

Holy Shot. Yes I do have an extended warranty. And I had the PDK fluid changed less than 60K but more then 6 years. This was before I got the warranty and I asked them about it and they said it was not an issue and they would cover everything.

Body In White

Bummer to hear about the leaking connector. Subscribed to hear how this ends up.

I'm about to do the fill 12 year service, 'curious if you found the part numbers for the 2 fill plugs and the 2 drain plugs (pdk trans fluid and pdk gear oil)?

dgjks6

I would get new bolts.

The drain bolt is 9G1 321 805 00

Thats the best I could come up with looking at the diagrams and knowing where it is. I ordered 2. Assuming the fill bolt is the same. There are both H8's so I am hoping. I didn't swap the fluid in case I need a new trans, didn't want to waste 100 fluid.

And to get the fill bolt out you are going to need a flex head ratchet.

dgjks6

Sorry. The last post was for the 75w90 gear fluid. Saw you asked about the PDK clutch fluid also.

Just to double check. The PDK clutch fluid needs a PIWIS to fill, though I read a post where someone with an expensive Autel did it. The part number is 9G1 321 825 01 for the plug in the PDK pan. Not sure about the PDK fill plug.

BucketList

The clutch fluid is different from the gear (or differential) oil. Diff oil is the 12 yr 120k miles and the clutch fluid is 6/60. If that connector is leaking, I bet all it needs is a new o-ring or 2.

dgjks6

Go to the Porsche website and look at parts breakdown with diagrams. Literally every part in the engine is there. Every seat option in every color. For the PDK the only parts are the mount, the pan, and a couple drain plugs.

PV997

You are almost certainly right is all it needs is a new o-ring. The problem is that the o-ring is on the inside of the transmission case and Porsche does not authorize dealers to open the gearcase nor do they provide any instructions on how to do it. That's why the Porsche document I posted above lists the remedy as "replace PDK transmission". It's absolutely crazy and I would never pay to do that, but if it's covered under warranty that's another story.

dgjks6

They are coming to get the car next week. Car has 54,000 miles. Warranty for another 18 months and 20,000 miles. So we will see.

But worst case scenario I put $15,000 into a $50,000 car and I won't feel horrible. I just put $4000 and we'll over 40 hours of labor into a 2008 BMW with 220,000 miles with a resale value of $1000.

Body In White

I have a PIWIS III to get the car into fill mode, no problem there…

I just called the dealer and ordered all the parts I need, based on their research the drain and fill plugs for the clutch fluid and gear oil are the same aside from the PDK transmission pan plug that comes with the replacement pan. I’ll post and update after I’m able to verify the plugs are correct.

Here are the part numbers I ordered:

• PDK Transmission Pan Kit (contains fasteners and drain plug) - 9G1-321-025-01
• PDK Transmission Fluid Fill Plug - 9G1-321-805-00
• PDK Transmission Fluid, 1 liter - 000-043-305-13 (need 6 liters)

• PDK Gear Oil Drain Plug - 9G1-321-805-00
• PDK Gear Oil Fill Plug - 9G1-321-805-00
• PDK Gear Oil - SAE 75W-90, 1 liter - 000-043-305-49 (need 3 liters)

dgjks6

Looking at my pics I think you got the right parts. The fill for the clutch and the drain and fill for the gear oil all look the same.

I'm debating about doing it myself. I looked at the specs for my NT510 and it says it can do the PDK fill mode. But going have the dealer check the leak and see what they think.