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The BMW Range
3 Series
E90, E91, E92, E93
Topping up engine oil on 325i
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<blockquote data-quote="Schwepps" data-source="post: 348029" data-attributes="member: 3592"><p>Dunno la. I wonder whether he actually found bitumen or whether it was just sludge. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /> He said "moreover it formed from pyrolization of the organic fractions remaining in the base oil from the refining process" Uhh...pyrolization? Anyway 'base oil from the refining process' means he was using a mineral or semi-syn oil. A fully syn oil is not refined, it's synthesized. Which makes it much more homogenous and so, much more sludge-proof.</p><p></p><p>Anyway, here's an article advocating timely oil changes to prevent sludge. There's also a para for those who like to run a bit low on oil. :wink:</p><p></p><p><a href="http://www.yotarepair.com/sludge%20article.html" target="_blank">http://www.yotarepair.com/sludge article.html</a></p></blockquote><p></p>
[QUOTE="Schwepps, post: 348029, member: 3592"] Dunno la. I wonder whether he actually found bitumen or whether it was just sludge. :rolleyes: He said "moreover it formed from pyrolization of the organic fractions remaining in the base oil from the refining process" Uhh...pyrolization? Anyway 'base oil from the refining process' means he was using a mineral or semi-syn oil. A fully syn oil is not refined, it's synthesized. Which makes it much more homogenous and so, much more sludge-proof. Anyway, here's an article advocating timely oil changes to prevent sludge. There's also a para for those who like to run a bit low on oil. :wink: [url]http://www.yotarepair.com/sludge%20article.html[/url] [/QUOTE]
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The BMW Range
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Topping up engine oil on 325i
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