had someone i know change my oil last friday with mobil 1. i had used castrol syntec once, but didn't see any real difference, anyways this mobil 1 stuff is awesome! i have averaged 28 mpg, and i drive like 85-90 on the highway and i drive through traffic. i am going to keep on using the mobil 1, its expensive though, but its not like i got to change the oil that often.

 

yea mobil 1 pretty much kicks all other oils in their drain plug