Thanks for the responses everyone.

 

Yeh, same here.. motul 75w90 for me

 

The oil may be the problem because it only happens when the cars up to its full normal running temp like after a freeway drive.
I paid the dealership to flush my tranny 4 months ago, and they said they "minimized" the grinding, they were wrong. Lol. I forget what kind of gear oil the dealership uses.

Looks like I'll give the cocktail.

I'll give an update in a few days to tell everyone an update.