Amsoil > Mobil 1
But really, it is, i changed out my mobil one today at a little over 3k miles of use.. reason being that it was giving me horrible gas mileage and it just looked dirty.
My car pulls stronger. It really does.. i did a little butt dyno from 2500 rpm's in 5th to 125 MPH, and it IS faster.
Pulls noticably harder all the way to redline in all gears.
It rev's more freely too and simply runs better.
I used 5w-30, but the only reason i did is because 0w-30 which is their best highest performance oil, is 10 bucks a quart and this oil change is more of a flush to get all the shitty mobil 1 out of my engine.
So yeah, go to www.amsoil.com
and order.. RIGHT NOW!!
And incase you dont beleive me.. here is some rock solid data that proves that amsoil is far superior to M1. http://undergrad.nova.edu/kevin/amsoilstudy.cfm