Oil viscosity effect on turbo performance

[Kurt Deschler]

I have been running Mobil1 15W50 in my 5ktq (k26) since I got the car. I
have started to wonder if a lower viscosity would help the turbo spool
faster or spin better at high RPMs. I typically run the car above 3k rpms
and often shift near the redline. Has anyone noticed any performance
differences with different viscosities? I see 0W40 on the shelf. Any
recommendations?

	Kurt
	87 5kcstq