What best transmission fluid is used in a 2003 bmw 745Li

What is your question?

My 2003 bmw 745Li has started shifting hard when I press on it when driving and also have notice fluid leaking on ground. What’s the best transmission fluid to add if needed to add or change?

What makes this problem better or worse?

When driving it cold or hot shift gear hard

How long has your 2003 BMW 745Li had this problem?

For a few weeks