Quote:

Originally Posted by vavet5308 Did u change the pressure cap during the cooling system overhaul? Sent from my PC36100 using Bimmer App

No, but no leakage seen around cap. Usually one would see a white dust like residue if a leak was present. For a long time I had a bitch of a time sealing the 1/2" top hose to the barb on the expansion tank. I finally got this to seal. I just checked this again and no residue there so I'm confident that this is not an issue.

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