What is the best synthetic oil?

WarmAndSCSI

It's not worth my time to post up evidence of bearing wear over a few years of tearing down and building engines. Too much to present, and I doubt anybody except one who possesses actual tuning and engine-building skills would be able to reasonably interpret such evidence.

Here is a one-line summary of what I found: all oils marketed as synthetic protect equally well, essentially. However, I have found some oils such as Mobil 1 0W-40 and Red Line 10W-40 to provide enough protection to actually prevent and mitigate engine failures.

Anecdotal engine building wear analysis means everything to people who actually build engines. Probably doesn't mean much to somebody who pays a shop to install bolt-ons

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