break in oils - The Supercar Registry

07-15-2007, 02:55 AM

P.J.

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Join Date: May 2004

Location: Ontario Canada

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break in oils

What works best for a big block break in oils.This quote is from the article "Is oil killing our cars"

Latest conclusions: Running our older, broken in engines on Castrol 20W-50 GTX is ok. Break in a new engine for 3,000 miles on HD 30 Castrol.
What has been your experience with break in oils.
Is 20 w 50 too heavy an oil for a big block break in??
PJ

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