VR1. Mineral or full synthetic
Then use the synthetic. It has a slightly higher viscosity index, which means it's more resistant to thinning due to heat. It will also meet it's high and low temperature performance requirements using less viscosity index improver and/or pour point depressant additive. These additives will shear and are consumed, leading to what some call "breakdown" before an oil with very little of them, or without any altogether.
If price is not a consideration, I'd be looking at Red Line or Driven. Still, the VR-1 is a good choice.
