Quote:
Originally Posted by NxTH
- BMW specialist told me that they have never seen this issue before where swapping filters and caps didn't resolve the issue. The next thing they suggest is swapping the entire aluminum block to rule it out. That sounds like such a waste especially since all the gaskets are so fresh. But maybe that's the only option left.
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I still wouldn't go ahead and change anything besides the filter, O ring and maybe the cap in this situation. Also ensure the cap is tightened to the correct torque rating (or good and tight). It doesn't make sense for the housing to warp with coolant lines running through it.