Because you changed two parameters at the same time.
"other oil" and simultaneously SX6000 - therefore, this doesn't help answer the question of whether adding SX6000 would improve things when there is already existing oil.
I had already read your post and understood it as described above.
Or did you only add the SX6000 later and then notice the improvement?
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.
Hello Martin.
I tried that once myself. It didn't do anything at all! It's a real shame about the money.
A few months later, I added new transmission fluid, but without using any of those "miracle" additives (like Castrol TAF-X), and that really made a difference.
I have the feeling that this only benefits the manufacturer. Just like oil flushes - I've never seen any deposits or sludge in my engine.