When I installed my Greddy Turbo Kit, people recommended 10w-40 and to stay away from royal purple. I now have a Comptech supercharger kit about to be completed. I haven't been able to find any recommendations for oils both brand and viscosity.

 

I use amsoil 5w40. The viscosity of it is very close to 10w30 cold but slightly thinker hot and can withstand higher temps during track events.

 

I use Shell Rotella T6 5w40, from what I have read on various forums its basically a cheaper amsoil

 

Been using Mobil 1 10w-30 no issues.

 

Yeah, I was using Amsoil too, but I have to order it online. So looks like most of you use. 40 instead of 30.

 

I also use amsoil 5w40. Thinner on cold starts to help the oil flow through the SC but thicker in high heat situations (due to having to cool off SC).

 

I used 10w30 Mobil 1 and Castrol on my ct setup. Worked good never had a problem.

 

royal purple hps 10-40w

 

I used amsoil 0w-30 per peoples recomendations. That is whats currently in the car. It was like water going in. Bought some amsoil 10w-30 so it should be mo betta. Also droping in some bc cams when I change the oil to 10w30 this weekend. Will be interesting to see how a high psi SC set up responds to them.

 

I used 10w30 Mobil 1 on my ctsc with the nv1000; switching to Amsoil with the nv1200...reason? Because i like amsoil..have it in the diff, and tranny.