Does every 4.4, 4.6 and 4.8

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Does every 4.4, 4.6 and 4.8

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#11

09-09-2013, 02:20 AM

TiAgX5

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Join Date: Oct 2010

Location: Coppell,TX

Posts: 3,489

Quote:

Originally Posted by JCL

Then there are all the studies published by SAE and others that document lower engine wear with used motor oil than new. Makes a case for not changing the oil too frequently.

Some discussion here: used oil better than new? - Bob Is The Oil Guy

Haven't read thru it all yet, but seeing "in some cases" and "under certain circumstances" verbage in the SAE document makes me wonder.

Why would BMW do a low miles oil change on all high RPM ///M cars? To increase wear on these new, tight tolerance engines?

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