DerekTheGreat
I'm Awesome
...Do you have a link to that study?
I'll just attach it. Not sure if it's been updated since then. Biggest shocker to me was how crappy 5W-40 Rotella T6 is despite all of the positive hype surrounding it.
Also, here's a link to his blog: 540 Rat's blog. Careful though, it's like going back to 1996 with how poorly everything is organized. Navigating through the thing is terrible, "F3" is your friend over there.