ATF fluid change - garage filled 9 liters

[Mahee]

I have a 986 2.5 l tiptronic which had a transmission fluid leak (just a few drops so nothing major, drove fine) so I left it to a local garage to change the gasket, filter and fluid. I had bought the ZF filter kit with gasket and 5 liters of Pentosin ATF 1.

 

When I picked it up apparently they had filled it up with 9 liters. The additional 4 litrers if atf they used was liqui moly top tec atf 1200 which they said was the correct atf for the car. (I cant find anywhere where it says its the correct atf)

 

Apparently it started to overflow at 9 liters, not at the usual 3,5 liters. They said it was normal since it hadn’t been used in a while.

 

Should I be concerned? For the 9 liters? For the atf fluid they used? Or can I drive happily without worries? It drove fine the 20 km (13 miles) home from the garage.

[JFP in PA]

I'm not surprised it overflowed with 9 liters added, the trans cannot hold that much fluid.  You are correct, it should have drained around 4 liters during the change.

[Mahee]

Any suggestion what I should do? Should I take it to another garage? Isn’t there an overfill valve which will spit the excess atf out?

[JFP in PA]

6 hours ago, Mahee said:

Any suggestion what I should do? Should I take it to another garage? Isn’t there an overfill valve which will spit the excess atf out?

 

The way these transmissions are filled is from the bottom, thru a fill port with an internal riser which limits how much oil is in the gear box, the excess literally overflows back out, so there is literally no way to put that much oil into it and have it stay there.  I would also suggest that the shop told you somewhat less than the truth about how much oil they put in the gearbox.

 

For the sake of the safety of the car, an your sanity, take it to another shop that fully understands the correct procedures for servicing the Tiptronic (a quick search here will turn up the correct method below), and have them check to see that the trans is filled to the correct level.

 

https://www.renntech.org/tutorials/article/68-tiptronic-transmission-service/