[T2] Replacing DFAV air filter element

[Lourd Baltimore]

I recently acquired a new-to-me engine for my bus that has a Weber 32/36 DFAV (a.k.a. Progressive) carb.  The filter sits right on top and is the rectangular pancake style.  Several sites sell replacement elements for this air filter.  Most list an EMPI part no. 9033.  Do I need to do anything special other than replace the element?  No oiling of it or anything?  Can the old element be cleaned and reused?

Thanks,

Josh