Re: [Tigers] CASTROL SYNTEC 20W-50-a highzinc formula specially engineered for classic engines.

A. C. Tynes v8tracker at gmail.com
Thu Oct 25 12:34:37 MDT 2007


20W-50 seems heavy for a small block Ford of any age, except maybe under
some all-out racing conditions. What weight does Dr. Mayf use in the
Bonneville car? 

A. C. Tynes


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