What... this whole thread and no old timer says that they just slap some Rotella T6 in there? My GT is my first new car. It's a weird feeling. I come from the Subaru world where you just keep a spear engine on the stand ready to go at am moments notice. The only thing that mattered about oil was just increasing the viscosity until you saw the pressure you liked. That of course depended on what bearing clearances you tried to achieve when building the dang thing. This fancy new car thing is gonna be an adjustment for me for sure.