Fabien92

When the engine is off, the fluid fills the reservoir to the top. 😉

As you can see right now. 😉 The car is jacked, but it’s the same on ground level. Engine off and cold. Shift on Park.

Schocki

It should be e fine then. I would still recommend to drain the fluid and check everything that was "played" with.

dr bob

While you have it drained, replace the o-ring where the reservoir nozzle slides over the tube from the pan. That drip from the gland nut is a telltale of that o-ring leaking. completely remove that gland nut and slide it onto the tube, then the o-ring after the tube has been wiped clean. Then the reservoir slides on, and the o-ring is gently put in position at the end of the reservoir nozzle. be careful not to roll the o-ring, as it will leak if it;'s at all twisted. If there is fluid ahead of the reservoir along the right side of the sump, there are common leaks where the throttle valve cable connects, thanks to an o-ring there. Easy to change that while the sump is off, giving you access to the little hook that connects the cable and the little lever. Just to the rear of that, a pivot pin for the that same lever is known to leak, but gets a dab of clear silicone on the end of the pin after thorough cleaning.

Your third picture still shows the car supported at the rear only, nose-down, while your narrative states that the car is level for the pictures of the reservoir. Make sure the car is actually level when inspecting the level in the reservoir please.

Fabien92

My new filter was on my deck for 18 months before to be installed on the car. We have a tropical weather.

GregBBRD

Shocking.
Forget the fluid....this is not your problem.
There was ample fluid in the transmission, before you added fluid.

GregBBRD

^^^^^^^This^^^^^^^

A few days ago....
(It will take you about 10 minutes, from where you are currently at.)

Fabien92

You’re right. But I have to tow the car in a friend’s garage to lift it. Not easy with jacks 😂 I will do it.

It’s incredible. My old fluid was very cleaned, and the new has only 100 miles. Porsche knows how to make cars and a lot of 928 have been sold. This problem seems to be very rare. People never change their ATF ? 😂

GregBBRD

I've had more than one 928 transmission fail, from fluid change.
And, from what I can tell from the Internet, apparently both BMTroubleU and Mercedes owners have had lots and lots of problems, from changing the fluid. I've got a good friend who is a BMTroubleU specialist....and he absolutely will not change the fluid on any automatic BMTroubleU.
I just shake my head and ask him why he doesn't just buy the correct fluid, from the dealer.....certainly they had no intention of the fluid lasting forever.

The piston seals, in our transmissions, do seem to be "particular" about what fluid is used.
I have not ever used the fluid you did, so I can not say that this was your problem, but the rubber on these older transmissions do not seem to "like" fluids which soften/swell the seals in order to "cure" leaks.
And the "new magical fluids" which work for almost every transmission, frighten me.
I'm not sure that the additive packages, which make the fluid universal, are safe to use in our older vehicles.
Therefore, I'm really careful about what fluid I use...in both newly rebuilt and old transmissions!

How many total miles are on the transmission, in your car?

Fabien92

My car has 90000 miles, and the new ATF DEXRON 2D only 100 miles.

A previous fluid change has been made in 2006 at 45000 miles with DEXRON 3.

BTW, I have one of the last GTS sold in USA (Dallas). It’s the number 75 on 77 in 1995. WP0AA2920SS820135.

Billu

Time to drop the fluid, the pan, and the filter.
Unless you find loose filter or bad filter seal, you are screwed.

Fabien92

A bad filter seal ? Where is it ? I don’t see it on PET.

Which new fluid ? DEXRON 2D or 3 ?

dr bob

The "filter seal" is the cork ring on the filter where it fits up into the valve body. It would be stretch to have that cause the complete failure you describe.

Take a hard look at the driveline components going back to the gearbox. Specifically, verify the the torque converter is spinning in the housing at the front of the transmission with the engine running. There are two couplings, a driveshaft inside the torque tube, and a stub driveshaft between the engine and the torque converter. If any of that has failed, you'd get the full and sudden failure you describe. It's a quick look with a light while the car is up in the air. Have a helper rev the engine some while you look through the grate openings at the bottom of the front transmission housing. make sure it speeds up with engine speed.

Fabien92

I will order a MANN-FILTER H2014. You confirm that the filter seal is included in the filter ? It’s not an other part to order ? Merci beaucoup Bob 🙏

Mrmerlin

the thing with the filter seal is that the old seal from the other filter could have stuck onto the valve body,
then the new filter was placed onto the trans with its new cork seals

GregBBRD

The cork seals come glued on the new filter...and the old filter.
It's not common for them to not come off with the filter, but anything is possible...




90,000 miles on a '95 GTS automatic.....See post #21. (Updated with some pictures.)