| you need to change it AT LEAST every 5k miles. Personaly I change mine every 2,500-3k miles. Going 9k-15k miles on the same oil is crazy, even worse for a turbo car! You will coke the turbos in no time. And how exactly does using redline oil decrease the liklihood of detonation?
---------------------------------------------------- I GOT AN ENGINEERING INTERNSHIP! WOOHOO for me :) -Justin ~darkside~ 91 TT stgIII++ black on black (the beast) 90 Talon TSI AWD (the beater) Thats right i got skyline turbos bi*ch! 388.8hp 461.4 torque @ 20+psi 379.7hp 404.9 torque @ 17psi (stock injectors, ICs, and exhaust) 
~IM Cheezoto~
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