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The BMW Range
5 Series
E39
100k KM Service :-)
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<blockquote data-quote="astroboy" data-source="post: 629487" data-attributes="member: 4527"><p>It is responsible to separate oil from the fume/breath the valve cover and divert air back to intake manifold while the oil, back to the dipstick passage, back into your oil sump. The way it did the trick is to channel the fume through a spiral of tunnel within the CCV to cool down the fume where oil trapped in air will settle. Cold oil will slowly turn into goo and it's a matter of time, it clogs out the cooling passage. That's when the engine is choking, cold start problem, smoke from tailpipe, engine abruptly dies, no power, and a long list of other problem. Just like your air filter, is it a must to change? I didn't change mine.. now 80k km d.. :4:</p><p></p><p>Heard of oil catch tank?</p><p></p><p><img src="http://1.bp.blogspot.com/_fgo9vnzI2S4/SR0yXqznS7I/AAAAAAAAAQU/kJtKoCC5o0c/s400/theory_oil.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://autoxcooper.com/images/craven_oil_catch_can.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="astroboy, post: 629487, member: 4527"] It is responsible to separate oil from the fume/breath the valve cover and divert air back to intake manifold while the oil, back to the dipstick passage, back into your oil sump. The way it did the trick is to channel the fume through a spiral of tunnel within the CCV to cool down the fume where oil trapped in air will settle. Cold oil will slowly turn into goo and it's a matter of time, it clogs out the cooling passage. That's when the engine is choking, cold start problem, smoke from tailpipe, engine abruptly dies, no power, and a long list of other problem. Just like your air filter, is it a must to change? I didn't change mine.. now 80k km d.. :4: Heard of oil catch tank? [img]http://1.bp.blogspot.com/_fgo9vnzI2S4/SR0yXqznS7I/AAAAAAAAAQU/kJtKoCC5o0c/s400/theory_oil.gif[/img] [img]http://autoxcooper.com/images/craven_oil_catch_can.jpg[/img] [/QUOTE]
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