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Old 01-11-2015, 11:57 AM   #16
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Join Date: May 2014
Location: S.California
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"I'm a big believer" .... so I won't challenge faith based feelings about oil. If you would like some science and technology the link provided would give you fact on which to base your beliefs :-).
BTW -You are technically correct.Here are the Cliff Notes from 540RAT;
Lower viscosity oils with the right 'package' and shear strength are generally better - with caveats -see link.Lower viscosity oils also reduce foaming- see below.
For the M96 we have some particular challenges.
1. The shear strength/temperature issue is often mentioned. That is easy to optimize if you read the oil rankings. There are some good, inexpensive options among the widely available non-synthetic oils (see link).
2. I am intrigued by the foaming problems in the M96. Porsche obviously had technical problems controlling this issue(worthy of a whole separate thread). The higher silicone/lower detergent values in some oils clearly help.
It is surprising that Valvoline VR1 10w/30 conventional is not frequently recommended for the M96 - high ZDDP,very good anti-foam/low detergent. It would need more frequent changing than some other oils .But if you are interested in this subject you are probably changing at 3k miles anyway?
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