InstantForum.NET v4.1.4Boston BMW Chapter Forumhttp://www.boston-bmwcca.org/InstantForum/BostonForum@boston-bmwcca.orgMon, 05 Jan 2009 21:50:20 GMT20http://www.boston-bmwcca.org/InstantForum/Topic537-7-1.aspxYou're on the right track relative to the components that you are seeking to replace. We have never had to replace any of the water pipes under the manifold. If you can do the heater hoses it's worth it. Be sure to use BMW dealer antifreeze. The green stuff doesn't seem to do so well w/ the aluminum engine. Also make sure you thoroughly bleed the air from the system and that the thermostat has opened before going off for a ride. ;)<br><br>Tue, 03 Jun 2008 12:15:53 GMTschnellerhttp://www.boston-bmwcca.org/InstantForum/Topic537-7-1.aspxAfter seeing a fellow autocrosser's '99 328 blow it's cooling system, I think it's time for a cooling system overhaul in my car. ('00 328Ci, 150k miles)</P><P>I plan to replace the radiator, expansion tank, water pump, thermostat and housing as well as the major hoses. How much farther into the system should I go? What is the failure rate of the plastic water pipes under the intake manifold? Seems like a lot of labor if they virtually never fail. Same goes for the hoses to the heater core, although they are easier to get at.</P><P>Any feedback would be much appreciated.</P><P>Mark ChambersTue, 03 Jun 2008 11:49:20 GMTmarkachambers