[naz]

Quote:Surprisingly, the mechanic told me that the oil were still pretty good when draining out.

did your mechanic run the oil thru a spectrometer to find out how much additive was left, and whether or not the oil sheared down? you can't tell whether you can extend the oil change interval just by looking at the oil. i would be cautious of believing anything that mechanic says if he spouts BS like that

mo,

in my opinion no matter what oil you use, when you first start using it you should change at the manufacturer recommended change interval and get a used oil analysis performed to check how much additive is left, whether the oil has retained its viscosity, and to check for wear metals. then you use that info to determine how much you can extend your oil change interval based

also, if you are looking for a 0w30 full synthetic oil you should check out castrol syntec 0W30 'european formulation' oil. look in http://www.bobistheoilguy.com and do a search for 'GC' or 'german castrol' there is a ton of information on there about this oil, and its supposed be really good stuff. i just started using it and i will post up a used oil analysis in a few months to see if its actually any good compared to the rotella T i've been using up till now