[dparm]

Correct, there are very old SAE tests that show motor oils actually work best after they have been running through the engine for a while. That's why people who run very short intervals might do more harm than good. Oil doesn't really break down due to the passage of time.

Castrol has been pushing titanium a lot in the past few years. Antimony is another new one found in higher-end oils (I suspect it will trickle down to OTS stuff soon).