Man I went through that same boat I just decided to go for 5/30 Mobil 1 and I've always used the Mobil 1 filter and I'm 71k on my z. I did run 10/30 royal purple but I was Naive and changed oil immediately. I was going to try 0/40 but why bother with that I mean our cars are designed for 5/30 oil.
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GTM 34 Row Oil Cooler | K&N Drop Ins w/ Z1's Post MAF Tubes | F.I Non-Res'd 2.5" T.P w/ CF CBE | Axis Wheels | Piecing together My Own Custom T4 Top Mount Single Turbo Kit *Still in the works* |
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