50 w oil - Club Cobra

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#27 (permalink)

04-22-2009, 07:57 PM

sparks

CC Member

Join Date: Dec 2002

Location: caledonia, il

Cobra Make, Engine: #1459 w/460(sold)New(used),spf w/427s.o.(sold)

Posts: 578

Not Ranked

Found this article.This study shows that artificially polymer thickened oil (Multi-Grade)
will tend to have a higher temporary viscosity loss (shear) under load
than an oil who's base is the same viscosity (straight weight oil). In
otherwords, multi-grades tend to fail, break down, loose viscosity when
it is needed most... under load, whereas a straight weight oil will not. This sounds like its sayin that multi grade is inferior to strait wght oil ?

http://resources.metapress.com/pdf-p...0&size=largest

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