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The BMW Range
5 Series
E39
e39 Parts and Maintenance Cost
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<blockquote data-quote="bimmerholic" data-source="post: 605314" data-attributes="member: 16686"><p>My E39 just clocked 333,000 KM and the engine has only been treated with Fully Synthetic 5W40 since released from the showroom.</p><p></p><p>So depending on what your past history of your car is (what engine oil it was using), i would think it's better to continue using that grade (semi synth or fully synth). I don't see a reason for the switch from semi to fully if your car has been using semi all this while. Save that extra dough for something else.</p></blockquote><p></p>
[QUOTE="bimmerholic, post: 605314, member: 16686"] My E39 just clocked 333,000 KM and the engine has only been treated with Fully Synthetic 5W40 since released from the showroom. So depending on what your past history of your car is (what engine oil it was using), i would think it's better to continue using that grade (semi synth or fully synth). I don't see a reason for the switch from semi to fully if your car has been using semi all this while. Save that extra dough for something else. [/QUOTE]
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