What kind of oil have you guys used for ur turbo setups?
Everyone always recommends mobile one, but what about hi end castrol? Honda recomends 30w10 type oil, and castrol makes a 'spec R - good for hi revving fours' 30w5 type oil? Would this be bettter/same as mobil one for our honda's, anyone had experience? Its only $10 cheaper and i'm going to be changing every 5000.

ps.
The turbo will be totally oil cooled.

-Weq