I didn't buy the tools because this is something I expect to do every other year or so. But in my case, bought 6 Q of Premium Oil + Filter + Labor = $70, in August/2019 for my X1 xDrive28 2015 (e84). You'll need 6 Q but will find only either 5 Q or box with 6x1Q (which is more tha $30). There's a video of a girl doing it, very easy, but, again, I don't have the tools and didn't feel like buying it just for this matter. That's guys!!
