As long as the oil meats BMW spec it is fine.
EDIT Seals wear, and is it the brake servo?
Nah, the transmission servo
Nothing seems to last, look up citroen/pug rear suspension collapsing and panda/500/ka spring bases rusting out and failing.
@deleted started
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As long as the oil meats BMW spec it is fine.
EDIT Seals wear, and is it the brake servo?