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  1. BMW 3 Series Forum - Technical Talk on the BMW E21
    Any ideas on this overheating problem? Engine warms up to mid point on guage quickly and will stay there,with no problems, no fluid loss for months,then if stuck in crawl traffic for 10-15 min temp will suddenly rise and boil radiator.If I get speed up to 15-20km/hr before redline temp will drop...