You can buy 4 BMW filter inserts (MANN) on eBay for around $25. Then all you need are the wrenches to remove the cover/oil drain plugs and some good synth. oil. Amsoil, Redline, Royal Purple or the like.

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2021 X5 xDrive40i
2015 X5 xDrive35i MSport
(Traded) 2013 X5 xDrive35i