On Wed, 13 Jan 2010 09:27 -0500, "Dave Mcneely" <mcneely4@COX.NET> wrote:

> Well, for what it's worth, when consumer reports, using modern
> nonsynthetic oils, ran vehicles under severe conditions in New York
> City, and extended the oil change interval long beyond the factory
> recommendations, they found no difference in wear compared to engines
> that were treated according to factory recommendations.

Was this the taxicab service test?  Remember that NYC taxicabs run
pretty much 24x7, or at least for many hours at a time.  That's actually
better for the motor and oil than a lot of short trips where the oil is
cold half the time.

Allan