Kirkland 5w-30, 8.3k miles; '07 RX400H 162k mi

[74DartSport]

Viscosity didn’t shear down quite as far as previously. Valvoline R&P went back in, trying to decide how far out to run it.

 

[fantastic]

Good start for your testing history. Are you going to run the R&P out to 8500 as well? Is this a Hybrid?