I use Amsoil Signature series in mine. Main reason, I can get it at dealer cost (brother has an Amsoil Dealer's License, and there is a distributor right here in Orlando). I do pay more for it than say Mobil 1, but I tend to do that on my cars. Merely a personal choice, I'm not going to stand on some soap box and declare that my oil is superior to others.
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2009 Nissan 370Z Base w/ Sport Package
F.I . LTHs with Non-Resonated Cat-back exhaust (C.F.) / Stillen Gen3 CAI / Up-Rev Tune
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