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Old 01-11-2015, 02:42 PM   #7
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Join Date: May 2014
Location: S.California
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There is a very similar ranking available from Molekule on "Bob is the oil Guy". I have some of the tech/acedemic credentials for tribology -just enough to concede I am way under qualified to dispute anything 540RAT or Molakule write.
This exam humbled me:
http://www.bobistheoilguy.com/motor-oil-final-exam/

Porsche don't rank their approved oils for specific performance criteria. It would be interesting to read anything Porsche write about shear/temperature/foaming for street cars. I mention this because the O.P. want the absolute 'best' oil.

Last edited by Gelbster; 01-13-2015 at 07:40 AM.
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