Thread: Castrol TWS
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      02-05-2013, 11:10 AM   #37
Socom
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Quote:
Originally Posted by sensi09 View Post
Came across this thread.
http://m3forum.net/m3forum/showthread.php?t=433692

Other than different API ratings, SJ vs SM. Also a lower viscosity at 100C for the "newer" oil.
IIRC old TWS is Ester base and "new" is PAO.
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