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The BMW Range
5 Series
E39
How Often are you topping up water/coolant?
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<blockquote data-quote="jsng" data-source="post: 620249" data-attributes="member: 21447"><p>Yeap ... </p><p>I experience that too .. gone through pressure test few weeks back and cant find the leak at all (high pressure .. close to 2 bar, the max that they can do).</p><p>End up the mech suspect that it could be the o ring issue (near the coolant temperature sensor), and since its not in perfect shape anymore, just change it. Worried that this could be the one who cause the problem especially when it starting to cool down.</p><p></p><p>After close to 2 weeks, the coolant level remain unchanged .. gotto monitor it for another week to confirm.</p></blockquote><p></p>
[QUOTE="jsng, post: 620249, member: 21447"] Yeap ... I experience that too .. gone through pressure test few weeks back and cant find the leak at all (high pressure .. close to 2 bar, the max that they can do). End up the mech suspect that it could be the o ring issue (near the coolant temperature sensor), and since its not in perfect shape anymore, just change it. Worried that this could be the one who cause the problem especially when it starting to cool down. After close to 2 weeks, the coolant level remain unchanged .. gotto monitor it for another week to confirm. [/QUOTE]
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How Often are you topping up water/coolant?
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