3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
It appears that its leaking, there is a fine film of what I assume is atf fluid around the edge of the fill cap. It looks like its leaking enough that over the course of a month, theres a fresh coat around the edges.
Yes BMW power steering systems use ATF fluid, Dextron I think, and they have for as long as I can remember. The oils are similar, but please do not mix them. Just for referance the 98' VW Passat uses mineral oil in the power steering system. Adding power steering fluid to that could cause serious damage.
P.S. Mine leaks also. I just clean it up when I wash my engine bay.
__________________ "It's not because I'm an aggressive driver, it's because I'm an idiot" actual quote from my wife.
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