Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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What works best for a big block break in oils. [/ QUOTE ] Gibb racing oil. Rotella T is better than conventional but still not good enough . 3 shops i know of in the area use it exclusively for dyno work. Its called Joe Gibbs Driven BR break in oil. |
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