Well...generally, we try to keep it to one question per thread. It makes sure a) your questions get answered and b) it is just a mess when you try to carry on three conversations on unrelated subjects in one thread.

Asking "How to replace the washer thingy?" is Tech. Asking "Where do I get parts?" is Talk. Especially when it has been covered many many many times here on the forum.

Asking "How do I change fluids?" is Tech. Asking "What fluids do I use and any special tips? is Talk.

Finally, asking about upgraded filter and any other questions about parts in general is Talk.

Is it hard and fast? No. It is part magic and part personal call. Your post just happens to have more Talk than Tech.

Good Luck,
Michael