Quote Originally Posted by DirtyMechanic View Post
why do you say this? do you get your oil tested? do you have any information to back this up or just going on what other people say and talk about.
i've never personally done it but i've read up a good bit on the subject (mostly on bobistheoilguy.com) and experimented with lots of oil weights and brands before going with what i use now. i also have friends with very similar setups (daily driven boosted hondas) do the same and get their oil tested and we've discussed the results. this is my 2nd boosted honda and it's been almost 4 yrs and damn near 70k daily-driven miles on this particular motor...it sees full boost almost every day and it is still running strong. so i do know a LITTLE about what i am talking about

i know what trying to get at and you're mostly right...now i'm not a mechanic but i am speaking from my personal experience. maybe my mind is playing tricks on me but honestly i can usually notice a difference (even if it's slight) in my car's performance after i've run the oil for 3k or so miles. i know when it's time for a change without even having to check the odometer.