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Message: <blockquote data-quote="azan23uk" data-source="post: 20970" data-attributes="member: 8654"><p>Dear All,Need some advice here. My 528i temperature began crossing pass halfway mark yesterday. It did again this morning but never passed the 3/4 mark. As far as cooling system is concerned, expansion tank cap, plastic screws, radiator, all hoses, water pump have all been changed 2 months back as the engine was losing coolant previously. Still, i'm loosing coolant now and with regards to the high temperature above, my mech initially suspected the electric fan. Upon checking, he found that the thermostat/housing is not working well. What's this thermostat? Anyone facing this problem of loosing coolant but cannot find the source of the leakage<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad    :mad:" loading="lazy" data-shortname=":mad:" />? TQ</p></blockquote><p></p>