Castrol Syntec Oil

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Castrol Syntec Oil

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12-02-2011, 04:29 AM

#14

Flavor 987S

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Join Date: Jul 2009

Location: Arlington Heights, IL

Posts: 1,561

Quote:

Originally Posted by jmatta

I've been running 10W40 Castrol Syntec in Chicago's hot summers with great results for years. No clatter on start-up and I change it every 3k miles (once a year).

By what measurement? Blackstone UOA's?? Engine tear-down??? Gut feel????

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