Recently acquired a 2.2ltr 2005 Z4 at a price which I could not resist if though it had little or no drive through the transmission.

Diagnosed a fluid leak so off came the sump, changed the fluid filter, fitted a new gasket and a new transmission seal to the output shaft put it back in only to find a pool of fluid on the garage floor the next day.

My only thoughts now are that the fluid pump may be leaking so I should change the gasket on this as well?

Anyone else encountered this problem before?

I welcome any advice/suggestions as to how to fix this issue.

Morning Anthony

Welcome to the Forum

Have you checked the Electrical connector and it's sealing ring if they are not seated correctly or the "O" ring is damaged they can leak, a lot. 

Good Luck 

Dave