soontobered84

Ed, You are just lookin' to pick a fight aren't you? LOL

Sean, My AT was filled per the WSM to the correct capacity.

My question rephrased is: "What damage results from overfilling the AT?" I have always heard that damage will result. I want to know if anyone has direct knowledge that damage WILL IN FACT OCCUR FROM OVERFILLING THE AT.
It just doesn't make sense to me that damage will occur, but I'm sure smarter and brighter minds than mine can come up with something bad that will happen by overfilling the AT.

928drvr86.5

I thought that is what i provided for you.


Be my guest, overfill it.


Not my area of expertise by any means either, my background is in electronics. My best guess is that when you overfill something and it expands with heat load, and in turn pressurizes the system, a leak will occur at the weakest point. In my case that was the transmission cooler supply line. Perhaps overfilling the reservoir restricts the return line from the cooler? i guess that would cause the pump to deadhead against the restricted line. I don't know, but I can lay out the facts of the experience I had, and what you take away from that is totally up to you.

1. The car was driven, but not enough to get the trans. oil to operating temp.
2. The car was quickly put up level on jackstands.
3. The Transmission reservoir was filled (albiet not at operating temp) to halfway between the two upper marks with the transmission in neutral.
4. the car was driven over the course of two days and the trans cooler line developed a leak at TT to frame rail transition.

I found the leak because it was dripping directly on the top of the catalytic convertor and smoking up my garage. At that point i put it in neutral and observed the reservoir level to be grossly overfilled.
I actually got pulled over just outside my neighborhood for the damned thing smoking so bad. Before my run in with the cops, I took the line off and tried to recrimp the collar at work, the nice policeman let me know that my effort was unsucessful.

The new line cost $180 dollars about four years ago.

soontobered84

Not my area of expertise by any means either, my background is in electronics. My best guess is that when you overfill something and it expands with heat load, and in turn pressurizes the system, a leak will occur at the weakest point. In my case that was the transmission cooler supply line. Perhaps overfilling the reservoir restricts the return line from the cooler? i guess that would cause the pump to deadhead against the restricted line

Ben, I wasn't discounting your experience with your car, but your reply here is actually more what I was looking for. Maybe we could somebody with experience in fluid dynamics to chime in. I appreciate your further reply because it helps me understand the whys and wherefores of what you experienced.

Mongo

They are discontinued now by Porsche. You have to get your old ones crimped. I have my old set that has cracked hoses on that just need to be re-hosed and crimped to swap in place of my new ones, once those ones get old and crack too.