I know first hand the cartridge idea for BMW goes back at least as far as 1968 with the M30 engine. At that time though, it was near the bottom of the block at an odd angle. It was held on with a huge central bolt, and getting everything lined up on replacement to seal properly with one hand whilst lying on your back wasn't the easiest thing to do. Then there was the usual housing full of used oil spilling out on removal. The housing was twice as big as the current ones too. I'd have preferred the spin on canisters then. But now, with the on top location, nothing could be easier than a BMW oil change.