http://www.synthetic-motor-oil-chang...g-competitors/
Check out this link to see how Amsoil compares to other leading oil brands out on the market.
For the most part Amsoil dominates...However, according to Amsoil's tests Castrol Syntec is second place most of the time! I am happy to hear that...Cause most of the people I talk to down here in FL tell me Castrol Syntec is one of the best...According to Amsoil's tests, this is quite true...Mobile 1 Synthetic is another of the big ones....Royal Purple is not on the list.
Although, I am fairly loyal to castrol. I've used it in all my cars and it works great. My mom's old Sentra lasted 180,000 miles before I finally traded it in on my Frontier...GO CASTROL!!!!!
Again, though. For the most part, Amsoil dominates all the others....especially on the first test...Check it out folks!!!!
