Tiptronic and front differential service

[Karl Owen]

Hello, I am very interested in draining the fluid in the Tiptronic S.  My Arizona daily driver 2007 997.1 C4S has 80000 miles and I would like to know exactly what type of fluid to get and how many liters. Will also get the filter and gasket.

 

I understand the capacity is about 9 liters and about half of that can be drained, and was thinking that after the initial service (filter, half the fluid) I will drive it for a few weeks so that it mixes,  then drain it again (this time without removing the pan and without replacing the filter) and thus will have replaced 75% of the fluid. Is that reasonable or is it crazy?

 

Also does the front differential fluid need to be replaced? If yes, what type and how many liters? Is there a rear differential?

Thank you all.

[Karl Owen]

@JFP in PA, @Loren, anyone?

[JFP in PA]

On ‎7‎/‎23‎/‎2019 at 12:21 AM, Koenbro said:

Hello, I am very interested in draining the fluid in the Tiptronic S.  My Arizona daily driver 2007 997.1 C4S has 80000 miles and I would like to know exactly what type of fluid to get and how many liters. Will also get the filter and gasket.

 

I understand the capacity is about 9 liters and about half of that can be drained, and was thinking that after the initial service (filter, half the fluid) I will drive it for a few weeks so that it mixes,  then drain it again (this time without removing the pan and without replacing the filter) and thus will have replaced 75% of the fluid. Is that reasonable or is it crazy?

 

Also does the front differential fluid need to be replaced? If yes, what type and how many liters? Is there a rear differential?

Thank you all.

 

You will get 5-6 liters of old fluid out of your Tip, and changing it a second time is not a bad idea.

This should help you with the front diff: 

 

[Karl Owen]

I got the supplies from my dealer, and would like to get the screw connection hose No. 9507/1 A (or equivalent) to be be able to connect to the  charging valve. Any ideas where i should look?

 

I am considering the MityVac adaptor for Benz 722.9 Auto Transmission that has a 12mm thread. Wold rather not buy the whole set with multiple adaptors for various brands, if I can get the right one upfront.  Can anyone ( @JFP in PA @Loren) tell me  what thread does the filler valve need? I would gladly buy the Porsche tool but if not available, any replacement would do. 

Edited August 5, 2019 by Koenbro
typos

[JFP in PA]

6 hours ago, Koenbro said:

I got the supplies from my dealer, and would like to get the screw connection hose No. 9507/1 A (or equivalent) to be be able to connect to the  charging valve. Any ideas where i should look?

 

I am considering the MityVac adaptor for Benz 722.9 Auto Transmission that has a 12mm thread. Wold rather not buy the whole set with multiple adaptors for various brands, if I can get the right one upfront.  Can anyone ( @JFP in PA @Loren) tell me  what thread does the filler valve need? I would gladly buy the Porsche tool but if not available, any replacement would do. 

 

We made our own using  a 134A line with a M14X1.5 adaptor on it to connect to the fitting on the pan. You can also buy Porsche's line, part# 000.721.950.71 Connecting hose -- US MSRP $40.05.

 

 

[Karl Owen]

Thank you @JFP in PA I ordered the Porsche hose adapter from my dealer. When I lifted the car, however, noticed that the underbody panel had some fresh oil leak on it -- was not there a few weeks ago when I looked under the car.

After removing the panel, it is from the front of the transmission, and it is not red like the Tiptronic fluid. Could it be the all-wheel driving mechanism?

 

PS. Just to clarify, although one pic shows a jack, the car is supported by four jackstands in the factory-recommended positions, plus a fifth stand under the rear suspension on one side. Thought I'd mention that.

Edited August 14, 2019 by Koenbro

[JFP in PA]

Possibly, but the leak also looks pretty small.

[Karl Owen]

As a follow-up, I had the dealer replace the filter, gasket, and fluid.


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