Originally Posted by Matt

I've done quite a bit of research just by typing "redline vs royal purple" or "royal purple vs mobil 1". Of course, you have to sit through the anecdotal evidence, the brand hate/brand fanboys, and insults to get to some of the "facts", but it's worth it.

RP, according to the Internet (and it's never wrong), is one of the top 3 or 4 oils out there for performance engines. If you're happy with RP, and especially if you obtain a positive oil analysis from something like Blackstone, I'd stick with it.