I change mine every 3,000 miles just to have as much insurance and peace of mind as I think is reasonable. I do run my car through the canyons with some other Z guys so that type of driving is also factored into why I change it every 3,000 miles with Redline 5w30.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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