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Message: <blockquote data-quote="astroboy" data-source="post: 461769" data-attributes="member: 4527">Nope! if you only change top gasket, then u might as well buy 4 sets at one go! The leak will become more serious because root of the problem not fixed. My first 2 times were only replacing the top gasket and it fail again in less than 1 oil change interval... and so everyone suspected the screw not torque to identical force, did that on the 2nd claim, still fail within 10k km. Please don't go through the whole learning cycle again. Waste money and precious time!My 3rd was replacing a flange near the vacuum pump plus its O-ring, that too didn't solve the problem. So the number 4th time replacing all the vacuum pump O-ring. Good till now. If fail again, I was told a new vacuum pump will be installed! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek!    :eek:" loading="lazy" data-shortname=":eek:" />My brand new E90 has been in and out of SC during its first 2 years of warranty period fixing the same things! :stupid: and this vacuum pump is leak, will cause loss of brake efficiency! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek!    :eek:" loading="lazy" data-shortname=":eek:" />And the farnee part is, this is not a rare problem. Its so common almost every E90 has it. Yet, the repair protocol is still the same 4 stages. Try A, if fail go to B, fai again go to C, then only try D when all A, B & C fail. Very systematic if u ask me.. :stupid:</blockquote>

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