mixing different weigh of the Mobil 1 oil

[nis350]

would it be OK if mixing 10/30 with 15/50 mobile 1 oil.

which weight is better for the NSX in SCAL? wonder if the engine would be quieter with the 15/50?

 

[Briank]

They should mix just fine but it is not recommended or necessary just stick with 10W30